... Bike Stem Cap 1.Grade5(6al/4v titanium) 2.Diameter:25.4/31.8mm 3.For stem production Titanium Bicycle Stem CapMaterial ... titanium frames (road, triathlon, track, BMX, cycloss etc. ), titanium bicycle parts (handlebar, clamp, stems, seat posts, fork, spacer, headset etc ... . ) and titanium material for bicycle manufacturing (Gr.9/Gr.5 titanium tubing, rods, sheet, welding ...