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Home / Other Components / 20×15mm Plastic Knob Tube Amp Amplifier Potentiometer Switch Cap Guitar Volume Control Round Knob

Attributes

Brand -
Category Electronic Components Market / Other Components
Origin -
Material High-quality ABS Plastic
Dimensions 20mm Diameter x 15mm Height
Shaft Fit Standard 6mm Split Shaft
Color Matte Black
Shape Round Dome Style
Compatibility Electric Guitar, Bass, Tube Amps
Package Quantity 2 Pieces per Pack
Weight 4 grams per knob
Installation Push-on Fit (No Screws Required)
Finish Non-slip Textured Surface

6 reviews

A

Anonymous

Mar 31, 2026

Rating: 3/5

Decent but generic

They work fine and fit standard pots, but the plastic feels a bit thin compared to OEM parts. Still, they do the job for a budget repair.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect fit for my Stratocaster

These knobs fit perfectly on my guitar's volume pots. The plastic feels durable and the matte black finish matches my pickguard exactly. Very happy with this purchase.

A

Anonymous

Mar 10, 2026

Rating: 5/5

Stylish and functional

Love the round dome shape. It gives my custom build a vintage look. The grip is good even when my hands are a bit sweaty during long sessions.

A

Anonymous

Mar 09, 2026

Rating: 5/5

Exactly as described

Fast shipping and the product matches the description perfectly. The 6mm split shaft fit was tight and secure. Will buy again for future projects.

A

Anonymous

Mar 05, 2026

Rating: 5/5

Great replacement parts

I needed replacements for an old amp project. These 20x15mm caps were exactly what I was looking for. They sit snugly on the shaft and don't wobble.

A

Anonymous

Mar 02, 2026

Rating: 4/5

Good value for the price

Solid little knobs. They are slightly lighter than metal ones, but for the price, you can't beat them. Easy to install without any tools.

5 FAQ

Q: Can I use these on a solid shaft pot?

A: These are specifically designed for split shafts. While they might push onto a solid shaft, they will not be secure without adhesive, which we do not recommend.

Q: Are these sold individually or in pairs?

A: This listing is for a pack of 2 knobs. If you need more, please adjust the quantity selector at checkout.

Q: What is the height measurement including the skirt?

A: The total height of the knob from the base to the top of the dome is 15mm as specified in the title and attributes.

Q: Do these come in white?

A: Currently, this specific 20x15mm model is only available in Matte Black. Please check our store for other colors in different sizes.

Q: Will these fit a CTS potentiometer?

A: Yes, these knobs are designed to fit standard 6mm split shafts, which includes most CTS potentiometers used in guitars and amps.

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