Blade for lawn tractor lawn mower rider for 28" deck A: 711mm B: 27mm C: 14mm D: 190mm E: 5mm F: 69mm A: Diagonal blade length B: Centre hole dia. C: Centre hole dia. D: Centre hole dia. E: Blade thickness F: Blade width SNAPPER Code: R320176 Original Code: 19515 16980 AT