Fits many electric guitar and acoustic guitar with 3R+3L tuners, like LP/SG/ES style guitar
Shaft diameter: 6mm (15/64 inch), vintage style bushing outside diameter: 8.8mm (11/32 inch), NOT the modern 10mm (25/64 inch) peg hole, so if you try to install it to a modern 10mm peg hole guitar headstock, you will need a convert bushing to help
Gear ratio 18:1, the retaining mechanism lock the strings in place, preventing them from slipping, improve tuning stability and make string changes much faster, turn smoothly and precisely, keep your guitar stays in tune
Zinc alloy made, with great electroplated finish
Package includes: 6 pieces machine heads set (3R+3L) and mounting accessories