15MM Belt Width; 5 Millimeter Belt Pitch; 5M-15 Belt Style; 21 Teeth; 16.662MM Face Width; Rough Bore; 38MM Flange OD; 32.28MM OD; 33.42MM Pitch Diam; No Keyway; No Bushing; No Minimum Plain Bore

Roller Chain Sprocket; 12B-1 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 137.82MM Outside Diameter; 127.82MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 19.05MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

Roller Chain Sprocket; 05B-1 Chain; 21 Teeth; 1 Row of Teeth; No Hardened Teeth; 57MM Outside Diameter; 53.67MM Pitch Diameter; B-Hub One Side; Rough Bore Mount; No Bushing; 8MM Chain Pitch; ISO Roller Chain; No Keyway; Steel Material

25MM Belt Width; 5 Millimeter Belt Pitch; 5M-25 Belt Style; 21 Teeth; 30.5MM Face Width; Rough Bore; 38MM Flange OD; 32.28MM OD; 33.42MM Pitch Diam; No Keyway; No Bushing; No Minimum Plain Bore

Spur Gear; 42MM Pitch Diameter; M2 DP; 20MM Face Width; Rough Bore; 21 Teeth; 20 Degree Pressure Angle; 30MM Hub Diameter; Steel