AK61H Cast Iron Pulley for V-belt size 3L, 4L OD 5.95" Single Groove Pulley AK61H Outside diameter: 5.95" Length through bore: 1.1563" inch Belt section size: 3L, 4L , A, AX Material : Cast Iron Belt Top Width: 1/2" One pulley A-Section Groove 1 Outside Dia. 5.95" 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, statically balanced The belt series most common for this pulley is 4L, or A , AX, V-Belts.Keyway not included