Replace Part Number:A411000501,A411000500. For Echo For Shindaiwa Vacuum & Blower. For PB-250 (P05412001001-P05412999999) Handheld Blower. For PB-250 (P30911001001-P30911999999) Handheld Blower. For PB-250 (P31013001001-P31013999999) Handheld Blower.