KNIFE BLADE FOR HONDA MOWER ROTARY MOWER FOR MODELS HRB535 , HRB536 , HRD535 , HRD536 , HRG536C , HRH536 MODEL - TECHNICAL SPECIFICATIONS LENGTH 530 mm CENTRAL BORE 22. 1 mm OUTER HOLE 10.5X11.8 mm CENTRE HOLE INDEX 91.4 mm CODE: 13270745 ORIGINAL CODE: 72511-VG0-C50 , 72511-VG0-B50 , 72511-VE1-650 , 72511-VE1-651 , 72511-VE1-652 , 72511-VF0-000 SR