Description:Made of New replacement Gas Fuel CapO-Ring supplied with it to seal the capGas Fuel Cap Assembly ReplacementFit for 029 039 044 046 050 051 064 066 076 084 088 MS290 MS310 MS390 MS640 MS650 MS660 Chainsaw Specifications:(Approx.)Thread Dia:41 mm / 1.6 inchCap Height: 23 mm / 0.9 inchTotal Size: 115 x 48 mm (L*D) Package Content: 2 pcs X Gas Cap Note: This is non-OEM product !