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Home / Guitar Electronic Accessories / 20x15mm Plastic Knob Cap for Potentiometer and Encoder Switch, Guitar Amp Volume Control with 6mm Splined Shaft

Attributes

Brand -
Category Musical Instrument Accessories / Guitar Electronic Accessories
Origin -
Material High-Impact ABS Plastic
Outer Diameter 20 mm
Total Height 15 mm
Shaft Type Hexagonal
Shaft Size 6 mm
Color Matte Black
Package Quantity 2 Pieces
Weight 4 grams per unit
Texture Non-Slip Grip
Compatibility Potentiometers & Encoders

5 reviews

A

Anonymous

Apr 14, 2026

Rating: 4/5

Good Value

Nice knobs for the price. Shipping was a bit slow but the product is solid.

A

Anonymous

Apr 04, 2026

Rating: 5/5

Perfect Fit

Exactly what I needed for my amp repair. The hex shaft fit snugly without slipping.

A

Anonymous

Apr 01, 2026

Rating: 5/5

Great Upgrade

Looks better than the old metal ones I removed. Very clean aesthetic.

A

Anonymous

Feb 25, 2026

Rating: 5/5

Sturdy

Plastic feels durable enough for regular use on my pedalboard.

A

Anonymous

Feb 02, 2026

Rating: 3/5

Tight Fit

Had to force it on slightly. Make sure your shaft is exactly 6mm.

5 FAQ

Q: Can I use this on effects pedals?

A: Yes, provided your pedal uses a 6mm hex potentiometer shaft.

Q: Is there a pointer line on the knob?

A: No, these are solid black without any indicator lines.

Q: Will this fit a 6.35mm shaft?

A: No, these are designed specifically for 6mm hexagonal shafts only.

Q: Is the plastic heat resistant?

A: It is standard ABS plastic. Please avoid exposure to high heat sources.

Q: Are these sold individually?

A: No, this listing is for a 2-pack of knobs.

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