Specifications:Made of high quality aluminium material, both the T-track and miter bar are durable to use.With this convenient tool, it allows you to make all your sliding jig and fixture needs on the router table, table saw and band saw.It provides with different size of the track and bar for you to choose in order to meet your needs.With the simple structure, it is easy to install. Item Name: Cross Sliding GrooveMaterial: Aluminum AlloyFeatures: Durable, Woodworking Tool, Easy to UseSize Details:Blue: 100mm x 30mm x 13mm/3.94" x 1.18" x 0.51", 200mm x 30mm x 13mm/7.87" x 1.18" x 0.51" (Approx.)Silver: 100mm x 30mm x 13mm/3.94" x 1.18" x 0.51", 200mm x 30mm x 13mm/7.87" x 1.18" x 0.51" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:4 x Sliding Groove Sheets (It will be the cross mode after installation.)