Spindle Assembly / Encore 362044Pack Size:1Encore 362044, Encore 422022Edgewater 592005, Green Meadow UESA17, J. Thomas JT-132CE, Mow More SH1080H, NHC 250-7542Encore 36", 48", 52" and 60" walk behindsOD: 5 1/4 ", Height: 7 " OVERALL, 5/16" keyway