Rear Hub Adapter Sprocket 44T for Gas Motorized Bicycle Wheel 2 Stroke Engine KitFeature: new and high quality The 44T Sprocket and Adapter Assembly is a durable aluminum unit that provides fast and easy installation The 44T Sprocket and Adapter Assembly is only compatible with the 415 Heavy Duty Chain The sprocket and adapter assembly ensures concentricity with the wheel hub by using the unique two piece adapter that wraps around the rear wheel hub and enables you to drive the entire wheel instead of applying pressure on the spokes Hub adapter suite for simultaneous use of disc brake and gasoline engine teeth in rear wheel modification of integral wheel bicycle This is is unique and special design,sprocket 44T& adapter Specifications: Material:Metal Color:Silver Size:18.2cm/7.16inch Package Included: 1 x 44T Sprocket 1 x Adapter 1 x Set screws NO Retail Box. Packed Safely in Bubble Bag. _x000D_ Due to differences in shooting equipment, displays, and production batches, the product may have slight color differences. This is normal, please refer to the actual product. We have tried our best to restore the true color through professional equipment, but we still recommend that you watch it under natural light for the most accurate visual effect.