Blade support hub Shaft centre hole diameter : 22.2 mm Height : 30.5 mm Compatible for the following models : 46PB-4, P46B, BL4046, B46, RB46, 46PO, B48HM, B53HMAE, 40PO-HQ, BH40/11B, 420BPC, 460BPC, 395PO, BL3051S, D4046P3, P46B, 48PKM, P48MB, V-50BC, MF21SHWK, YM7021SPBE, BG48PO, 48PMB, 48PO-HQ, 48PMB, 48PO, MF21SHWB, 53SPKV, LR55, G46MO, M46MO, YM7019SPB, 46PB, 46POHW, 46 POHQ, 48B, RB46M, B53HMAE, FBM40OHV, Ambition 46B, P51B, Select 4600, CC48PO, MF19SK, MX48HWB, G55, SPBHW53, GBR53 ECO, 51BC, G46MO, M46MO, MF19SB, 48B, B53HMAE, FBM40OHV, Select 4600, 51BC-5, 395PO, D4040P3, SPBE55HW, BB46-1 OHV Code : 748-0376 122-070 13286554 MTD