Features: Our clamps will provide great clamping action for your universal T-track system configurations and components Material: 6063 aluminum alloy, Fine sandblast anodized with silver color Includes: 2 PK Hold down clamps, 5/18" -18 T bolts ,5 star knobs Track Clamps Fits: 3/4" x 3/8" t track system,CNC,jigs,table saws,and more Size: 6-3/8” Length X 1-1/4” Width X 3-19/32” Depth Our t-tracks and accessories features: smooth and durable, easy to install and use, and versatile. After using Our t-tracks and accessories. You can add the number of workbench configurations as you want. Those can be optimizing your fixture table and workroom. The t-tracks and accessories is made of 6063 aluminum alloy. T track were pre-drilled mounting holes. For our t track, track kit and track clamps, T-bolts ect. can well work together Our t-tracks and accessories can be used for many in many scenes and workbenches and machine: it can work together when holding, positioning, and fixturing in woodworking & metalworking. It can well work together with many machines : workbenches, jigs, cnc etc