AK41H Cast Iron sheaves Pulley for V-belt size 3L, 4L OD 4" Single Groove Pulley AK41HAK41H Cast Iron Pulley for V belt size 3L, 4L OD 4" Single Groove Pulley AK41H Outside diameter: 3. 95"~4" inch Length through bore: 1. 1563" inch Belt section size: 3L, 4L , A, AX Material : Cast Iron Belt Top Width: 1 2" One pulley One Groove A Section Groove 1 Outside Dia. 3. 95"~4" Bushing H AK H bushing V Belt sheaves ( pulleys ) is an excellent choice for inch and metric shafts AK Sheaves are accurately machined from fine grained cast iron,