A 06B1-17T Platewheel has an Outside Diameter (de) of 55.3 mm, a Pitch Diameter (dp) of 51.83 mm, a bore diameter (D1) of 10 mm, and an overall width of 5.3 mm. This platewheel is designed for a 06B roller chain with a 3/8-inch (9.525 mm) pitch.