Attributes . 100 Chain; 13 Teeth; 1 Row of Teeth; Hardened Teeth; 5.821" Outside Dia; 5.224" Pitch Dia; B-Hub One Side; Rough Bore Mount; 1-1/4" Chain Pitch; ANSI Roller Chain Chain Type; No Keyway; Steel Material; 2-3/8" Max Bore . Names