material: 6061-T6 alloy full cnc sprocket | nylon/fibreglass replaceable guard
teeth: 1/8 inch
thickness: 8mm thick sprocket, 10mm thick guard

bore: 15/16 inch (23,8mm) for 24mm crank spindles
adaptors: included for 22mm and 19mm crank spindles

additional information:
sunk adapter for better chain alignment
fiberglass guard allows for friction-free grinding