Cast Iron Pulley / Scag 48199Pack Size:1Bobcat 38210, Encore 363137, Jacobsen 182186, Scag 48199, Scag 482645Edgewater 509632, ESF 165-491, Foley/PLP 165-491, Green Line 32293, Green Meadow 2AK32, Green Meadow 38210, J. Thomas JT-9801, Landscaper Pro 292199, Landscaper Pro 212183, Mow More SCP124, NHC 276-9679, Oregon 78-673, Prime Line 7-05315, Rotary 7124, Sunbelt SB-7124, Sunbelt B1SB7124Jacobsen walk behind units-wheel drive unitID: 5/8 ", Keyway: 3/16 ", OD: 3 1/4 ", Jackshaft wheel drive pulley for walk behind units, Double pulley, 5/16"-18 set screw