blades for cutter blades for lawnmowers lawn mowers WOLF 6.51 BA , VI51P MODEL - TECHNICAL SPECIFICATIONS LENGTH 510 mm CENTRAL BORE 32.5 mm OUTER BORE - mm CENTRAL BORE INDEX - mm CODE: 13270174 ORIGINAL CODE 4250 070 , 6930 090 , 4277 400 , 171051 , 5522 SR