ITEM NAME:Bike Bicycle Freewheel Threaded Hubs Disk Disc Brake Rotor 6 Bolt Flange Adapter Product Description Description: Bike Bicycle Freewheel Threaded Hubs Disk Disc Brake Rotor Flange Adapter Specification: Material: aluminum alloy Model: FL44 Weight: About 20g Hole quantity: 6 holes Center distance of diagonal hole: approx. 44mm/1.73'' Center distance between adjacent holes: approx. 22mm/0.86'' Note: The flange seat is installed to install the disc with hole position. Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Included: 1 x Disc Brake Rotor Flange Adapter.Included: 1 x Disc Brake Rotor Flange Adapter. Note: The flange seat is installed to install the disc with hole position. Due to the different display and different light, the picture may not reflect the actual color of the item.