?Wheelset is made of high grade and high duty magnesium alloy. Strong and sturdy in all the right places. ?Unique design, super-cool looking and stylish. Lightweight and very aerodynamic-ride with the wind with the best gear underneath. ?Undergone countless tests and tweaks to guarantee the best rider comfort and steering control. Best acceleration and shock absorption qualities- smooth and fast rides guaranteed. ?Ideal for fixed-gear bikes as well as single-speeds. Fits Tire Size: 700x23c/25c/28c (1.75/1.95/2.125/2.35"). ?Our products are sent from the US warehouse, about 4-7 business days to delivery. If you have any questions about our products, please feel free to contact us. We will provide you with a satisfactory answer within 24 hours.