Needle Bearing / MTD 941-0404Pack Size:1MTD 741-0404, MTD 941-0404, Ref No SCE99ESF 107-630, Foley/PLP 107-630, NHC 272-9984, Oregon 45-037, Prime Line 7-08407, Rotary 7241, Sunbelt SB-7241, Sunbelt B1SB7241MTD 600 and 659 variable speed pulleysHeight: .555 ", ID: .572 ", OD: .750 "