Blade for lawn tractor lawnmower mower aero-keil 48 SUNLINE 48 48HM 48BH MTD SUPER KING 48 A Diagonal blade length: 478mm B Centre hole: 19.5mm C Centre hole: 12x19.5mm D Centre hole: 70mm E Blade thickness: 3mm F Blade width: 55mm Al-Ko Code: R300581 Original Code: 513628 328531 AT