HIPA (Pack of 5) 530058709 Air Purge Primer Bulb Pump for Husqvarna Poulan Craftman Weedeater String Trimmer Blower Replacement manufacturer part number: 530058709 I.D 10/16" x O.D 14/16" x HT 12/16" Package include: 5pcs primer bulb Check the primer bulb size carefully, make sure it work