Blade for lawn tractor mower MB500 505 505E 505KAT 505BS A: 480mm B: 18.3 mm C: 8.5/10.5mm D: 65/95mm E: 3mm F: 64 mm A: diagonal blade length B: centre hole dia. C: centre hole dia. D: distance between centres of positioning holes E: blade thickness F: width of blade VIKING Code: R303986 Original code: 61057020131 AT