Wanyifa Titanium M8x15mm Bicycle Crank Arm Fixing Bolt with Cap For Square Taper Bottom Bracket Screws Pack of 2 Bolt Material: 6AL/4V(TC4)Titanium Alloy,Grade 5 Weight : 10g/Pcs (Crank Bolt+ Extractor + Washer);Pack of 2 Total 20g. Bolt Size:M8X15mm Pitch 1.0mm; Washer Material:Nylon Bolt Drive Type : Hex Package include:2x M8x15mm Crank Bolt,2x Extractor,2 x Nylon Washer