Will these accommodate 12AWG wire?

I don't think that they are intended for 12AWG wire but they should work as long as you have a good solder connection. Crimping without solder is not an option. Although I think they will work with 12AWG, I don't recommend them because pressing the metal plug into the sleeve is very difficult.

What gauge wire do these support?

These fit the wire diameter size 3.5mm-4mm

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8Pcs 4mm Banana Plug Male Connector Gold Plate Solder Type for Multimeter Test Leads Speaker Wire Cable RC Lipo Battery Charger Adapter

Product ID: 96779400

Details

Color
8Pcs Male
Connector Type
Banana
Contact Material
Brass
Insulation Material
Polyvinyl
Terminal
Banana

⚡20A max current rating

🔌4mm precision fit

🛡️Gold-plated corrosion resistance

¥3783

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Description

⚡ Plug into precision and power — don’t get left disconnected!

PRECISION 4 MM FIT - Engineered for seamless compatibility with standard test leads and speaker wires.
COMPLETE 8 PIECE SET - Includes 4 red and 4 black plugs for organized, color-coded wiring setups.
PREMIUM GOLD PLATING - Corrosion-resistant brass contacts for superior conductivity and longevity.
HIGH CURRENT CAPACITY - Supports up to 20A, ensuring reliable performance under demanding electrical loads.
DURABLE SOFT PVC INSULATION - Protects connections with a 35mm insulator length for safety and durability.

This 8-piece set of 4mm male banana plugs features gold-plated brass connectors and soft PVC insulation, rated for up to 20A and 60V. Designed for solder-type connections, these plugs ensure reliable, corrosion-resistant performance for multimeter leads, speaker wires, and RC battery chargers, making them an essential upgrade for any professional or hobbyist’s toolkit.

Specifications

ASIN	B07K2C78K8
Best Sellers Rank	#169,699 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #441 in Electric Plugs
Brand Name	Bei Qian
Color	8Pcs Male Banana Plugs
Connector Gender	Male
Connector Type	Banana
Contact Material	Brass
Customer Reviews	4.5 4.5 out of 5 stars (475)
Insulation Material Type	Polyvinyl Chloride
Manufacturer	Bei Qian
Material Type	Brass, Polyvinyl Chloride
Maximum Voltage	60 Volts (DC)
Model	B07K2C78K8
Number of Items	8
Part Number	B07K2C78K8
Stud Size	4mm diameter
Terminal	Banana

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¥3783

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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