HUSQVARNA ROTOR MOWER BLADE FOR MODELS ROYAL 47-S/E , PARTNER 45 CM MODEL - TECHNICAL SPECIFICATIONS LENGTH 441 mm CENTRAL BORE 9.5 mm OUTER BORE - mm CENTRAL BORE INDEX - mm CODE: 13271034 ORIGINAL CODE: 516 50 64-10 , 516 50 64-04 , 516 40 64-00 , 531 01 02-33 , 531 00 50-35 SR