★For Mosrite Guitar★ New Tremolo Arm Springs ★Set of 3 Types★ Arm Height is Important! ⑦ 【Product Description】 ■Length = 29mm (30mm, 31mm) ■Outer Diameter = 15mm ■Inner Diameter = 12mm ■Wire Diameter = 2mm ■Number of Coils = 5 ●This is a set of 3 types, so please use them according to the string gauge you use. ※29mm, 30mm, 31mm ●The ease of playing changes completely depending on the height of the arm. ●The springs are soft and versatile, and the effectiveness and feel will increase your satisfaction. Please give it a try. Thank you very much. We are looking forward to your order. Thank you for viewing.