Attribute Value: 100 Chain; 30 Teeth; 1 Row of Teeth; No Hardened Teeth; 12.643" Outside Dia; 11.959" Pitch Dia; B-Hub One Side; Bushed Mount; 3020 Bushing; 1-1/4" Chain Pitch; ANSI Roller Chain Type; Keyway; Steel Material . Names (Page 1)