This set of 3 x 3 Schaller M6 locking tuners have the attachment screw offset at a 45 degree angle to the tuner post, this set up is common on a lot of 3 x 3 headstock designs from Ibanez, Schecter, ESP, Jackson and PRS SE guitars. They feature a 1:18 gear ratio for accurate tuning. The Schaller locking system is operated by a thumb screw on the back of the tuner for quick and easy string changes. The enclosed gears feature Schaller's Velvet-Tec and LX6-Lube technologies to ensure the gears mesh and turn smoothly and precisely, backlash is minimised and it also adds durability. The Schaller M6 range of tuners are the world's bestselling and set the standard for fully enclosed machine heads.