●Suitable for electric guitars equipped with a Tremolo bridge system like Fender/Squier Strat style ●Mounting diameter: 0.2 inches (5.5 mm), please check the size image before purchasing ●Made of high quality steel, it is durable and rust-resistant. Suitable for replacing and upgrading guitars ●Pop-In Tremolo Arm ●Package Includes: 1 Tremolo Arm