Answer Dagger Pro OS20 Fork Description: The Answer Dagger Pro OS20 fork is a lightweight race fork made from a 4K thread count carbon fiber weave with an all 7000 series Alloy steer tube, 7000 series CNCd dropouts, and a distinctive matte black finish. The OS20 fork is a larger fork for OS20 wheels ONLY. OS20 wheels are a larger 451 ISO diameter which is the same diameter as a 20"x 1-3/8" wheel. Features: 7000 Series Alloy Steerer Tube and Drop Outs Built in compression device Specifications: Material: 4K Thread Count Carbon Fiber Weave and 7000 Series Alloy Wheel Size: OS20 for 451 ISO Diameter Axle Type: 3/8" (10mm) or 20mm Closed Dropouts for thru axle/Female Offset: Steer Tube Diameter: 1-1/8" Height: Steerer Tube Length: 170mm Bearing Race: Not Included (30.1mm) Compression Bolt: Compression Bolt Tool: Color: Matte Black Weight: 21.2oz