--- product_id: 1211401 title: "Estes 2231 Fin Alignment Guide Model Kit , Color Varies" brand: "estes" price: "€ 44.73" currency: EUR in_stock: true reviews_count: 10 category: "Estes" url: https://www.desertcart.fr/products/1211401-estes-2231-fin-alignment-guide-model-kit-color-varies store_origin: FR region: France --- # Supports 3/32" & 1/8" fin thickness Fits BT-20 to BT-80 tubes Holds 3 or 4 fins securely Estes 2231 Fin Alignment Guide Model Kit , Color Varies **Brand:** estes **Price:** € 44.73 **Availability:** ✅ In Stock ## Summary > 🚀 Nail your rocket’s fins like a pro—because precision is the new cool! ## Quick Answers - **What is this?** Estes 2231 Fin Alignment Guide Model Kit , Color Varies by estes - **How much does it cost?** € 44.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/1211401-estes-2231-fin-alignment-guide-model-kit-color-varies) ## Best For - estes enthusiasts ## Why This Product - Trusted estes brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted STEM Legacy:** From Estes, inspiring rocketeers since 1958 with quality and safety. - • **Streamlined Build Process:** Holds fins steady while adhesive dries—no more awkward hand-holding. - • **Precision Perfect Alignment:** Eliminate guesswork with exact fin placement every time. - • **Versatile Fin Compatibility:** Works seamlessly with balsa, basswood, or plywood fins in two thicknesses. - • **Universal Fit for Rocket Builders:** Compatible with a wide range of body tubes from BT-20 to BT-80. ## Overview The Estes 2231 Fin Alignment Guide is a precision tool designed for model rocket enthusiasts seeking flawless fin placement. Compatible with body tubes ranging from BT-20 to BT-80 and fin thicknesses of 3/32" or 1/8", it securely holds three or four fins made of balsa, basswood, or plywood. This accessory streamlines the building process by ensuring fast, accurate alignment, reducing errors and enhancing rocket performance. Backed by Estes’ decades-long STEM heritage and a 1-year warranty, it’s a must-have for serious hobbyists aiming for professional-grade results. ## Description A precision molded accessory that makes it easy to glue three or four fins to various sized body tubes ranging from BT-20 to BT-80 diameters. Unique and adjustable vertical fin holders can accommodate either 3/32 in. or 1/8 in. balsa, bass or plywood fins. This is a must-have tool for any serious model rocket builder. Never attach your fins wrong again and remove that painful process of holding them in place while the adhesive dries. Review: Great little tool that makes installing fins on rocket tube infinitely easier. - Cheap and effective. I wish I had this when I was a kid. 90% of the time when I had a problem with model rockets as a kid it was because of fin alignment, and this goes a long way towards eliminating that problem with model rocket kits that need balsa wood fins attached to a cardboard tube. I have built several kits with my son and have had no problem with fin alignment. You still have to be careful, but this eliminates the guessing and trying to line up measurements on a curved surface so everything is straight and spaced evenly. Review: Works as described - Works as described ## Features - FIN GUIDE FOR MODEL ROCKET: The Fin Alignment Guide is the essential tool for model rocket builders who want speed and precision. It fits a wide range of body tubes from BT-20 to BT-80. - EASIER ALIGNMENT: Our Fin Alignment Guide is capable of holding either three or four fins, the Fin Alignment Guide works with 3/32 in. or 1/8 in. balsa, basswood, or plywood fins - CONVENIENT BUILDING ACCESSORY: Whether you’re building a beginner model rocket or a master-level replica, this fin-alignment tool has a place in your rocket-building kit. It’s the ideal tool to help serious rocket builders get their models crafted right the first time with as much precision as possible. - SAFETY FIRST, FUN ALWAYS: Our rockets and rocket launch accessories are designed to be used with the NAR (National Association of Rocketry) model-rocket safety code. Always ensure you have an appropriate launch site, stand back at least 15 ft., insert the safety key, issue a countdown, and then you can let your rocket fly! - WE IGNITE IMAGINATIONS: Since 1958, Estes has created educational rocket kits and displays designed for an unforgettable aerospace experience. As a family-owned company, we have grown to offer exciting STEM products that engage aspiring rocketeers and the future minds of aerospace. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004LGXCLI | | Additional Features | Fast & accurate fin alignment, Suitable for three or four finned rockets | | Age Range Description | Kid | | Art Craft Kit Type | Model Rocketry | | Brand Name | Estes | | Color | Assorted | | Customer Reviews | 4.5 4.5 out of 5 stars (1,629) | | Global Trade Identification Number | 00047776022317 | | Included Components | SUPPLIES.SCIENCE EDUCATION.MODELS.ROCKETS/ACCESSORIES | | Item Dimensions | 12 x 3 x 6 inches | | Item Type Name | Model Rockets | | Item Weight | 0.25 Pounds | | Manufacturer | Estes | | Material Type | Plastic | | Model Name | Fin Alignment Guide | | Number of Pieces | 1 | | Seasons | All Seasons | | Size | Medium | | Subject Character | (-) | | Theme | Model Rocket Kit | | UPC | 047776022317 | | Unit Count | 1.0 Count | | Warranty Description | 1 Year Warranty Against Manufacturer Defects | ## Product Details - **Age Range (Description):** Kid - **Brand:** Estes - **Color:** Assorted - **Item dimensions L x W x H:** 12 x 3 x 6 inches - **Theme:** Model Rocket Kit ## Images ![Estes 2231 Fin Alignment Guide Model Kit , Color Varies - Image 1](https://m.media-amazon.com/images/I/51y2NuFwtNL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: The standard center post does not fit over the top of either of the mini posts. All other fits good. I have sanded both over 30 minutes. Replace?** A: The standard center tube is the same size as A, B or C rocket engine. Sanding it for 30 minutes is much to long to make it fit. Used a used engine after you clean it out **Q: Is there any way to use this to set fins that are up higher on the body, and not at the very bottom?** A: It depends on how high on the body they are. I've used this to set fins that are four inches or more above the base of the rocket, but those had a pretty big angle so I was able to clamp part of the fin very high on the plastic. I use a piece of wood from the sheet the fins are cut out of as a height guide so I get them all the same. If it's really high, you might be able to turn the rocket body and find upside-down and attach them that way (too far from the bottom could be close enough to the top of the body). **Q: Does Estes sell the fins separately? I can't seem to find just fins.** A: Call Estes Customer Service 800 number and ask can they send it to you. Go to the website and find the contact us link **Q: Can the fins be glued at an angle to induce spin?** A: The Estes PN 2231 Fin Alignment Guide is designed to only align fins vertically on the body tube. No provision was ever make to alter fin alignment as this would require flight testing of all Estes rockets to support that angling fins was OK to do on all products as it could potentially decrease the altitude performance on all products. Additionally, we do not and would not support the idea of angling fins on any Estes rocket unless that product was specifically designed to spin during launch, like PN 7258 Space Twister. The Estes Team ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great little tool that makes installing fins on rocket tube infinitely easier. *by R***T on September 22, 2025* Cheap and effective. I wish I had this when I was a kid. 90% of the time when I had a problem with model rockets as a kid it was because of fin alignment, and this goes a long way towards eliminating that problem with model rocket kits that need balsa wood fins attached to a cardboard tube. I have built several kits with my son and have had no problem with fin alignment. You still have to be careful, but this eliminates the guessing and trying to line up measurements on a curved surface so everything is straight and spaced evenly. ### ⭐⭐⭐⭐⭐ Works as described *by A***S on January 31, 2026* Works as described ### ⭐⭐⭐⭐ Works well to alaign fins. *by A***E on February 22, 2026* Works well, helps grandson line up fins correctly. ## Frequently Bought Together - Estes 2231 Fin Alignment Guide Model Kit , Color Varies - Estes 2274 Recovery Wadding - MDL RCKT ENGNS 3PC C6-5 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.fr/products/1211401-estes-2231-fin-alignment-guide-model-kit-color-varies](https://www.desertcart.fr/products/1211401-estes-2231-fin-alignment-guide-model-kit-color-varies) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-05-20*