KNIFE BLADE FOR ROTARY MOWER ROTARY MOWER CUTTERS CASTELGARDEN , STIGA , GGP , ALPINA FOR MODELS ES464 , ES464TR , ES464TBR , ES646TRH , ES464TRT , ES464TREB MODEL - TECHNICAL SPECIFICATIONS LENGTH 438 mm CENTRAL BORE 9. 8 mm OUTER HOLE 10.5 mm CENTRAL HOLE INDEX 52 mm CODE: 13271790 ORIGINAL CODE: 181004121/0 81004121/0 1117-3354-01 1111-9116-01 SR