Good intonation is essential for good music, so intonation adjustment is one of the most important considerations when setting up a guitar. The Ibanez EJK1000 allows fast and easy intonation adjustment through easy installation and simple functionality. The EJK1000 works for Ibanez original double-locking, Edge, Lo-Pro Edge and Edge-Pro Tremolo Bridges. Simply attach the unit onto a fine tuner and hang the clutch to the saddle, and the EJK1000 firmly holds the saddle. You don’t have to loosen the machine heads or remove the strings to unlock and move the saddle. You can easily adjust the saddle position with the dial located at the end of the EJK1000. The EJK1000 is a fantastic supporting tool for guitarists and techs who love Ibanez original tremolos. Material : Stainless (Main), Duralumin(Claw) No need to loosen the machine heads or remove the strings for adjustment For Ibanez Edge, Lo-Pro Edge and Edge-Pro tremolo bridges