A 06B1-38T platewheel has an Outside Diameter (de) of 119.5mm, a Pitch Diameter (dp) of 115.34mm or 115.35mm, and a Bore Diameter (D1) of 12mm. It features 38 teeth, is for 06B (3/8 inch pitch) chain, and has a typical width (b or bf1) of approximately 5.3mm.