BLADE KNIFE FOR HONDA MOWER ROTARY MACHINES FOR MODELS HRA536 , HR2160 , HR2150 MODEL - TECHNICAL SPECIFICATIONS LENGTH 525 mm CENTRAL BORE 21 mm OUTER BORE 14.5 mm CENTRAL BORE INDEX 88 mm CODE: 13271519 ORIGINAL CODE: 72511-VB3-E41 , 72511-VB3-E40 SR