Berd HAWK30 Gold Carbon Wheels 29"The World's Lightest XC Wheels At only 1,022 grams without tape and valves, the Berd HAWK30 Gold wheels are the lightest 30 mm internal width production wheels on the planet. If you thought our other wheels were fast, just wait until you try these. Due to high demand, HAWK30 Gold wheels are currently shipping in 4 6 weeks. Order now for soonest delivery. Rims Rim Material Carbon Fiber Internal Rim Width 30 mm Rim Depth 22 mm External Rim Width 35 mm