set2: 1 x circuit Main items + 2 x potentiometer gasket + 4 x potentiometer nut + 1 x socket gasket + 2 x socket nuts & 6 x Guitar machine heads (3R3L) + 6 x Ferrules + 6 x Threaded bushing + 6 x screws Set of 6 quality black machine heads for steel string (electric or acoustic) guitars (3L + 3R) The guitar will not off key if you lock the screw post when tune the guitar properly. Quality sealed machine heads Auto Locking Tuners (Tuning Pegs) Heavy duty internal gear 2pcs resistance potentiometers (1 pcs A500K, 1pcs B500K) Line Length: Approx. 24.8 inch / 63 cm Potentiometer rod length is about 0.71 inch (18mm); shell diameter is about 0.63 inch (16mm) With a 6.3mm jack Material: stainless steel/ABS Size:4.4 x 3.8cm The product is new, never used and in good conditon, just go ahead and buy Color: AS show Package Contents: 1 x circuit Main items 2 x potentiometer gasket 4 x potentiometer nut 1 x socket gasket 2 x socket nuts 6 x Guitar machine heads (3R3L) 6 x Ferrules 6 x Threaded bushing 6 x screws 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.