Wanyifa Titanium M5x20mm with Washer Allen Hex Tapered Bolts Screw for Bicycle Stem Pack of 6 Material: 6AL/4V(TC4)Titanium Alloy,Grade 5 Specification: M5x20mm with Washer Thread Pitch : 0.8mm;Head Size : 8.5 x 5mm/ 0.33" x 0.2" (D*H);Washer Size : 8.5 x 1mm/ 0.33" x 0.04" (D*Thickness) Weight : about 2.8g/Piece Package Content : 6x Titanium M5x20mm with Washer Bolts