AK56-1/2" Sheave Pulley - 5.6" OD 1-Groove Pulley AK56 for V-belts 4L, A, AX, AK5612 (OD: 5.6" - ID : 1/2")AK56 1 2" Sheave Pulley with 5. 6" OD One Groove Pulley For V Belts size 4L, A, AX, AK56 (OD: 5. 6" ID : 1 2") AK5612 AK56 5. 6" Cast Iron Pulley Sheave 1 2" Shaft One Grooves V Belt A Section 4L AK56 1 2" RBO AK56 1 2" Outside diameter: 5. 5" inch Bore : 1 2" inch Belt section size: 4L, 3L One Groove One pulley Hex set screws NO keyway AK56 1 2" V Belt sheaves is an excellent choice for inch and metric shafts. AK Sheaves are accurately machined from