are these polarized or non-polarized?

All electrolytic capacitors are polarized indicated by a "+" symbol or band. This must be observed when replacing an existing electrolytic. I surmise from your question that you should do some research on line. There are many informative sites. Even Wickipedia.

What do the numbers mean (e.g., 4x7 and 5x11)?

It indicates the physical size of tha capacitor, diameter and height.

Generally speaking, electrolytics of this size are rarely certified as “low ESR. Usually they have higher voltage ratings and higher capacitance values. That said, I would say “no.”

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Swpeet 240Pcs 24 Kinds Different Electrolytic Capacitors Range 0.1uF－1000uF Assortment Kit, 10V/16V/25V/50V Aluminum Radial Electrolytic Capacitors for TV, LCD Monitor, Radio, Stereo, Game

Swpeet 240Pcs 24 Kinds Different Electrolytic Capacitors Range 0.1uF－1000uF Assortment Kit, 10V/16V/25V/50V Aluminum Radial Electrolytic Capacitors for TV, LCD Monitor, Radio, Stereo, Game

Product ID: 100867510

Details

Brand
Swpeet
Capacitance
0.1 microfarad
Material
Aluminum
Maximum Storage Temperature
105 °C
Shape
Cylindrical

⚡240 pcs total - ultimate variety

📦24 distinct capacitance values

🌡️Wide temp range -40°C to 105°C

€ 31.12

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Description

🔧 Upgrade your toolkit with capacitors that mean business!

BUILT TO ENDURE - Operates flawlessly from -40°C to 105°C with ±20% tolerance ensuring long-lasting, stable performance.
COMPACT READY - Miniature radial design fits tight spaces in TVs, radios, game consoles, and more—perfect for pros and DIYers alike.
ALL IN ONE POWERHOUSE - 240 premium aluminum electrolytic capacitors covering 0.1uF to 1000uF for every project need.
PRECISION AT A GLANCE - Clearly marked values and organized compartments mean zero guesswork and instant access.
YOUR REPAIR INNOVATION PARTNER - Ideal for prototyping, repairs, and upgrades across electronics—don’t get left behind in the tech race.

The Swpeet 240Pcs Electrolytic Capacitor Kit offers a comprehensive assortment of 24 capacitance values ranging from 0.1uF to 1000uF, rated for 10V to 50V. Housed in a reusable, compartmentalized box with clear markings, these high-quality aluminum capacitors operate reliably across a wide temperature range (-40°C to 105°C) and are perfect for electronics repair, prototyping, and DIY projects.

Specifications

ASIN	B07KC99W2K
Best Sellers Rank	#96,165 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #628 in Industrial Electrical Capacitors
Brand Name	Swpeet
Capacitance	0.1 microfarad
Capacitance Tolerance	20
Customer Reviews	4.6 4.6 out of 5 stars (1,762)
Included Components	Electrolytic Capacitors
Item Shape	Cylindrical
Manufacturer	Swpeet
Material Type	Aluminum
Maximum Storage Temperature	105 °C
Maximum Voltage	50 volts
Mounting Type	Through-Hole Mount
Number of Items	75
Operating Voltage	50 volts
Part Number	S309-Capacitor-240
UPC	754914370178
Upper Temperature Rating	105 °C

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