Features:<br> Package: A set of 10pcs female and male skating screws for inlines skating wheels<br> Size: 31mm skating screw is the perfect replacement for the front wheel. 36mm skating screw is the perfect replacement for the rear wheel and brake-bolt<br> Material: Made of quality iron with coating on the connecting part, it is sturdy, sturdy and not easy to loosen<br> Easy to install. Only suitable for skating shoes required the male and female screw fittings on the wheel<br> Needed two 4mm hex key on double ends for installing. One hex key for fixation and another tool for doing the work<br> Notice:<br> 1.Actual color may be slightly different from the image due to different light effect<br> 2.Please allow 1-3cm deviation due to manual measurement<br> <br> Material: Iron<br> Middle part length: 31mm<br> Middle part outer diameter: about 6mm<br> Top hexagonal sleeve diameter: 4mm<br> Package List:<br> 10Pcs Inlines Skate-Axle Screws Replacement