Length: 228mm; Thickness:4mm; Diameter of center hole:37mm;Compatible with 415 chain and 415h chain
10.5mm bolt hole diameter of the larger 3 holes that bolt to sprocket; 80mm measurement from center of large hole to center of larger hole that bolt to sprocket
Works well for installation kit 9 hole set;Works well for adapter to bike rear hub;
Works well for spoke wheel and mag wheel which are designed for motorized bicycle
Package: 1pc multifunctional 56 teeth sprocket; Any questions,please contact us firstly !we can help you solve the problem until you are satisfied.