2 Set Musical instrument accessories: 1 Set x Guitar Volume Knobs & 1 Set x guitar knobs and never used. Suitable for 1/8 inch (6.4 mm) shaft pot Made of plastic with set screws and brass filler. nSet of 6 vintage-accurate black Jazz Bass knobs Used on early 60s Jazz Bass guitars. Fits most vintage and modern Jazz Bass guitars From tone and volume knobs to pickup covers, bridge covers and more, Pure Vintage knobs and covers let you cosmetically customize your instrument or amplifier like never before. These replacement parts are created with period-correct personality in mind to the same specifications as early parts, allowing players to give any amp, guitar or bass a shot of vintage-accurate looks and tone. guitar knobs size:14.8 x 20mm Material: plastic+ABS colour:Black Package Contents: 6 x Guitar Volume Knobs 10 x guitar knobs Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.