Blade for lawn tractor lawn mower blade fusion tungsten carbide fused blade on blade cutting edge A: 437mm B: 10mm C: D: E: 5mm F: 64mm A: Diagonal blade length B: Centre hole dia. C: Centre hole dia. D: Centre hole dia. D: Centre hole dia. E: Blade thickness F: Blade width HUSQVARNA Code: R320060 Original Code: 506885201 531005009 AT