BLADE HOLDER HUB FOR TAG LIAER LAWNMOWER MOWERS MTD : 53HA , 53SPO , 478P , GES53 , HB53 , HBM53 , RD-21 , YM6021 MODEL - TECHNICAL FEATURES OUTER DIAMETER 22. 2 mm SHAFT DIAMETER 55 mm HEIGHT 19 mm INSERTION DEPTH - mm CODE: 13286558 ORIGINAL CODE 748-0377E , 748-0377D , 748-0377C , 748-0377B , 748-0377A , 748-0377 , 753-0609 SR