20" BMX Wheelset 406/451 Double Wall Aluminum Alloy Rims QR Disc Brake 24H Hubs Front & Rear For Mountain Bike, Silver(Gold,451)

20 inch Bicycle Wheelset 406/451 BMX Bike Wheelset Disc Brake Quick Release Mountain Bike Front and Rear Wheels Aluminum Alloy Rims 24H Hubs for 7/8/9/10/11/12 Speed ​​CassetteBicycle Wheel Specifications:A couple of circles:Color: Black, Titanium, Blue, Red, GoldDimensions: 406/20 inches, 451 (20*1-1/8)Material: Double-layer aluminum alloy rimNozzle: Schrader A/V valveA pair of Hubs:Type: Disc brakeBearings: Front 2 Rear 4 bearingsNumber of holes: 24 holesQuick Release: Front Hub: 100mm, Rear Hub: 135mm (Rear hub design for tool-free removal (no tools required for future freehub maintenance/refueling)Rays:Front 24 Rear 24 spokes45# Stainless Steel Round Spokes14mm rustproof copper headFreehub Compatible:7-8-9-10-11-12 speed cassetteApplication: Folding Bikes/Mountain Bikes/BMXWeight Approx.:Front wheel weight 640g, rear wheel weight 740gPackage Included:Front wheel x 1Rear wheel x 1Quick Release Lever x (1 pair)PVC Tire Pads x 2

• Bike Rims: Double-layer aluminum alloy rims, 24-hole front wheel and 24-hole rear wheel, inner width 19.34mm, outer width 24.25mm, height 20.76mm, Schrader A/V valve.
• Front and Rear Hubs: 7075 Aluminum Alloy, 2 Front & 4 Rear Sealed Bearings, Disc Brake, 100mm Front / 135mm Rear Quick Release. 7075 Aluminum Alloy Cold Forged 6-Claw Freewheel Compatible with 7/8/9/10/11/12 Speed ​​Cassettes.
• Spokes: 45# stainless steel round spokes, 14MM anti-rust copper head, 24 spokes each on the front and rear wheels, reduce wind resistance, increase riding speed and rim strength, evenly stressed spokes.
• Folding Bike Wheelset: 20-inch 405/406 mountain bike wheelset. Front wheel weight 650g, rear wheel weight 750g.
• Package: 1 front bike wheel, 1 rear bike wheel, 2 quick release levers, 2 tire pads. Before purchasing these rims, make sure the dimensions of this wheelset match the size you need.