Features1 Material: This speed freewheel is made of high strength steel, using hardening technology, with greater wear resistance, durability, high temperature resistance, erosion resistance, rust resistance, no deformation, high durability. 2Lighten the Burden of Cycling: This freewheel weighs only 17.5 ounces, the hollowing technology easily reduces weight, which can strike an balance between strength and weight. 3High Accuracy Tooth Shape: Strong compatibility, impact resistance, bring the riding more possibilities. 4Easy to Install: Professionally manufactured, direct replacement of old or broken freewheels, is an accessory for mountain bikes and road bikes. 5Multiple Usages: With different demands for road, gravel, and mountain riding, this speed freewheel can easily satisfy the needs for a variety of riders.SpecificationItem Type: Bike freewheelMaterial: High Strength SteelWeight: Approx. 497g/ 17.5ozSpeed: 8 Speed8 Speed Tooth Number: 13-14-15-17-19-21-24-28TPackage List1 x Bike Freewheel