20 pieces of plastic potentiometer rotary knobs sized for 6mm D type shafts. Designed for quick replacement and easy installation on guitars and other audio equipment that use 6mm diameter D type potentiometer shafts. Key benefits Ready supply of spares for repairs and projects: 20 identical knobs lets you multiple instruments or stock replacement parts for future use. Secure fit on D type shafts: Inner contour matches 6mm D type potentiometer shafts to reduce wobble and slippage during use. Compact, easy to operate: 15 x 13.5 mm dimensions provide a comfortable grip while keeping low profile on instrument and equipment panels. Durable plastic construction: Lightweight yet sturdy for routine use in musical instruments and audio devices. Simple installation: Pushon fit requires no special tools for most potentiometer shafts, making swaps fast and convenient. Specifications Quantity: 20 pieces Outer diameter: 15 mm Height: 13.5 mm Shaft compatibility: 6 mm diameter D type potentiometer shaft Material: plastic Practical applications Guitar maintenance and : worn volume or tone knobs on electric guitars and basses to restore function and feel. Effects pedals and amplifiers: Swap knobs on stompboxes, preamps, and small amps when upgrading controls or replacing damaged parts. DIY electronics and mixers: Use for hobby projects, home audio equipment, or small mixing consoles that use 6 mm D type potentiometers. What you get A pack of 20 plastic rotary knobs sized 15 x 13.5 mm, compatible with 6 mm D type potentiometer shafts, ready for immediate use in repairs, upgrades, and builds. Model references ec52a 41656 b54a5 d2460 7174b 8c480