Blade for lawn mower SG13 SG15 SG17 A: 430mm B: 14mm C: D: E: 4mm F: 50mm 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 ISEKI Code: R301661 Original code: 859530606100 AT