3 pcs of dome knobs with coarse knurl on the sides. The central hole for Pots is approx. 6mm in diameter. Durable gilded metal material. Used to replace the old knob. These 3 pieces of durable gilded metal knobs are must-have replacement parts for guitar lovers. Color: gold Material: gilded metal Inner hollow shaft diameter: Approx. 6mm / 0.24in Package including:3 x Knobs Note:Light 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.