HIPA Carburetor Rebuild Kit K20-WYL for WYL Series Carb Replace manufacturer part number: K20-WYL Fits WYL series Carburetors ( WYL-1-1 to WYL-318-1) Package includes gaskets, screen, seals, inlet lever, needle, diaphragm and pin ( the 15 kits in the picture) Ryobi 753-04014 Checkvalve is not included, watch the picture carefully, make sure the 15 kits can meet your needs.