HIPA Carburetor 561635001 Primer Bulb for Homelite 26cc String Trimmer / BrushCutter / Blower Replacement manufacturer part number: 561635001 For 26cc Homelite / Ryobi string trimmer, brushcutter and blower I.D x O.D x HT: 5/8" x 27/32" x 5/8" Qty: 6pcs