21MM Belt Width; 8 Millimeter Belt Pitch; 8M-21 Belt Style; 42 Teeth; 24.638MM Face Width; Bushed; 124.714MM Flange OD; 105.35MM OD; 106.959MM Pitch Diam; Yes Keyway; 14 To 50MM Bushing Bore Range; 2012 Bushing; No Minimum Plain Bore