Blade for lawn tractor mower RIDER 850 TRILAMA A: 304mm B: 10.2mm C: 8.2mm D: 60.3mm E: 5mm F: 64mm A: diagonal blade length B: centre hole dia. C: positioning hole dia. D: positioning hole dia. E: blade thickness F: blade width HUSQVARNA Code: R320055 Original part No.: 506668701 506551801 506551803 AT