Apart of the complete headsets fitting all Dartmoor frames and many other popular head tube standards on the market we are offering now also several types of only upper headset parts and only bottom headset parts separately. This way it makes possible to collect desired headset for even more existing head tube standards on the market. Cups and top cover made of 2014 aluminum. High quality precision sealed 45/45 bearings with anti-rust titanium coating and special high density grease protecting against water penetration.