Abstract: Described herein is a sprocket for interfacing with a perforated material, such as a chain. The sprocket includes a hub and a material-interfacing plate. The hub is shaped to fit around an axially extending shaft, and includes a plurality of hub portions each shaped to fit around a portion of the shaft; and a retaining portion and a hub interlocking portion, each disposed on at least one of the hub portions. The material-interfacing plate has a periphery that is shaped to interface with the perforated material, and includes a plurality of plate portions each shaped to fit around a portion of the hub; and a plate interlocking portion shaped to interlock with the hub interlocking portion and disposed on at least one of the plate portions. The material-interfacing plate is in a secured position when the plate interlocking portion and the hub interlocking portion are interlocked with each other.