Blade for lawn tractor mower RIDER 850 TRILAMA A: 305mm B: 10mm C: 8mm D: 61mm E: 4mm F: 50mm A: Diagonal blade length B: Centre hole dia. C: Centre hole dia. D: Positioning hole dia. E: Blade thickness F: Blade width HUSQVARNA Code: R302718 Original Code: 506668701 AT