2AK49H Solid Sheave Bushing with 4.9" OD Double Grooves for V-belts size 4L, A, AX, 2AK49H (Pulley OD 4.9" ) Outside diameter: 4.9" inch H Bore: Belt section size: 4L, A, AX 2 Grooves One pulley Cast Iron 2AK49H you can choose the bushing size you need we have most of the H Size you need 2AK-H bushing V-Belt sheaves is an excellent choice for inch and metric shafts. 2AK 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. 2AK-H bushing 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.