Wanyifa Titanium Ti M5 X 40mm Bolt Nut Washer for Easton Ec90 Ec70 Zero Seatpost EDC Material: 6AL/4V(TC4)Titanium Alloy,Grade 5 olt size:M5x40mm ;Nut Size:length 15.5mm/0.61'',Diameter:8.5mm/0.33'' Weight:Total 14 gram One set (2 bolts, 2 nuts and 2 washers) for Easton Seatpost