Key Features Premium Material: This bicycle wheelset is made of aluminum alloy and steel for durability and lightweight which makes it easier to ride. Enjoy Your Ride: The bicycle wheelset features 2 bearings at the front and 4 bearings at the rear for improved lubrication, giving you better transmission efficiency and longer sliding distances during your ride, so you can enjoy your ride even more. Exquisite Craftsmanship: The frame of the bicycle wheelset is anodized. The excellent manufacturing process increases the wear and corrosion resistance of the aluminum alloy surface, thus extending the life of the wheel. Excellent Weight Capacity: The quality materials and sturdy construction of this bicycle wheelset give it a maximum weight capacity of 441 lbs, making it suitable for the average adult or youth. Safe Riding: The bicycle wheelset features double six-hole discs as brakes to provide you with efficient and responsive braking for a safe and reliable riding experience. Application This wheelset is suitable for bikes with a front opening gear of 100mm/3.94in and a rear opening gear of 135mm/5.31in. The taki of the rear wheel is suitable for 7, 8, 9, 10, 11, and 12s cassettes. One spacer is required for 8-11s cassettes, three spacers are required for 7s cassettes, and 12s cassettes are directly installed. Specification Color: Black Hub Color: Red/Gold Brake Style: Double Six-hole Disc Bike Type: Mountain Bike Material: Aluminium Alloy, 45#Steel Surface Treatment: Anodized Load Capacity: 200kg/441 lbs Front&Rear Opening Gear:100mm/3.94in; 135mm/5.31in Gross Weight: 4.5kg/9.9lbs Product Diameter: 73.66cm/29in Package Size: 74*18*66cm/29.13*7.09*25.98inch Package Included 1* Wheel Set (Front+ Rear) 2* Quick Release Lever 2* Spokes