Description:Made of New replacement Gas Fuel CapO-Ring supplied with it to seal the capOil Fuel Cap Assembly ReplacementFit for 36 41 55 136 137 142 141 254 257 Chainsaw Specifications:(Approx.)Thread Dia:24 mm / 0.94 inchCap Height: 19mm / 0.75 inchTotal Size: 95 x 30 mm (L*D) Package Content: 2 pcs X Oil Fuel CapNote: This is non-OEM product !.