we can offer NO.25,35,40,41,50,60,80,100,120,140,160 different pitch standard sprocket. single-type A,single or double-typeB. we can offer NO.25,35,40,41,50,60,80,100,120,140,160 different pitch standard sprocket. single-type A,single or double-typeB..With keyway and set screws. industrial sprocket 41BS16H 3/4" Bore ky 2ss