Blade for lawn tractor mower mower GT56SB 56W GT56BV A: 530mm B: 16mm C: 8mm D: 65mm E: 4mm F: 56mm A: diagonal blade length B: centre hole dia. C: positioning hole dia. D: positioning hole dia. E: blade thickness F: blade width MA.RI.NA SYSTEM Code: R302662 Original code: 56013 AT