This is a Brand-New Genuine STIHL 024, MS240, MS260, MS260C, 066, 026, MS640, 044, 064, MS290, MS310, MS390, 084, 029, 039 plus a lot more Chainsaw Air Filter Slotted Nut Screw, Part# 11241418300. This will be shipped within 24hrs of purchase and in some cases, it may be shipped same day.