HUSQVARNA MULCHING BLADE FOR MODELS COMBICLIP 155 , P250D , P252D , PT26D MODEL - TECHNICAL SPECIFICATIONS LENGTH 559 mm CENTRAL BORE 12.4 mm OUTER BORE 8.2 mm CENTRAL BORE INDEX 40 mm CODE: 13271563 ORIGINAL CODE 544 17 85-10 , 544 17 58-01 , 586 1989-10 SR