Control Tech Race Skewers Quick Release Review Posted: August 20, 2018 Under: Bike Wheels and Accessories By ChillyBoulder no Comments Material: titanium Open/close: hex key Length: 100-130mm Finish: black Weight: 47g Material: titanium An ideal match for race wheel set, using6Al/4V Titanium rod with 5 mm skewer shafts. Suitable also for MTB/Black anodized/Super light weight.