Thank you for viewing. This is a set of GROVER tuning pegs, 3L3R, Chrome. Guitar machine heads Material: Zinc alloy Size: 28mm/1.1 inches (see diagram) Color: Silver For acoustic guitar/electric guitar Quantity: 1 set The package includes: 6 x Guitar machine heads (3L 3R) 6 x Screws 6 x Screw nuts 6 x Washers The ratio is 1:18 (Gear ratio: 1:18)