MULCHING BLADE KNIFE LEFT ROTATION FOR ROTARY MOWER, TOWER MOWER, MOWER CUTTERS CASTELGARDEN , STIGA , GGP , ALPINA FOR MODELS MP84 , P84HYDRO MODEL - TECHNICAL SPECIFICATIONS LENGTH 420 mm CENTRAL BORE 18 mm EXTERNAL BORE 8.5 mm CENTRAL BORE INDEX 65 mm CODE: 13286954 ORIGINAL CODE: 182004361/0 82004361/0 SR