2AK46-7/8" Bore Solid Sheave Pulley with 4.45" OD 2 Grooves 2AK4678 4.45" Cast Iron Pulley Sheave 7/8" Shaft Two Grooves V Belt A Section 4L 2AK46 4.45" - bore 7/8" Description: Bored-To-Size Sheave, 2 Groove. This 2 Groove, 7/8″ bore diameter, 4.45″ outside diameter sheave for an A, 3L, or 4L belt is available for purchase online. The sheave has a 3/16″ stock keyway and setscrew. For more information about this or other belt pulleys, contact MDS using the “Have a question about this product?” link below. Groove 2 Outside Diameter: 4.45" – 4-29/64" Bore Size: 0.87" – 7/8" Uses Belt 3L,& 4L,& ;A Keyway 3/16" x 3/32" 2AK46-7/8" V-Belt sheaves is an excellent choice for inch and metric shafts. AK Sheaves are accurately machined from fine grained cast iron, statically balanced, painted and individually packaged. The belt series most common for this pulley is 4L, or A , AX, V-Belts.