General description 12pcs Carburetor Primer Bulbs designed for various outdoor power equipment including brush cutters, chainsaws, blowers, and lawn mowers. This set includes 6 bulbs with a 19 mm diameter and 6 bulbs with a 22 mm diameter, providing versatility for different carburetor types. Technical specifications Material: High-quality plastic Diameter: 19 mm (6 pieces), 22 mm (6 pieces) Installation Tool-free installation for easy setup Removable and washable for convenience Usage Compatible with hedge trimmers, lawn mowers, gasoline saws, blowers, and other machines Designed for efficient fuel priming