Features:Made from durable ABS material, these caps are designed to fit perfectly on your amp and provide professional look.Use them in the studio, or even in home, these caps makes it easy and stylish.With 10caps in each bag, you will have plenty to work with and can mix and match colors to create a truly unique look for your guitar setups.Fits Amplifiers with 6mmShaft Pots;Guitar AMP Amplifier Push on Fit Knobs; Specifications:Material:ABSDiameter:Approx.20mm/0.79inHeight:Approx.16mm/0.63in Note:Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:10xGuitar AMP Amplifier Knobs