Features This is for a set of hold down clamp for use with T-slot track. Both T-screw and threaded rod are of 8mm threaded Slides into T-track & quickly secures with the turn of the hand knob nut Puts clamping pressure anywhere along the flush-mounted T-slot T-track These clamps are useful in many woodworking & metalworking applications for work holding, positioning, and fixturing <strong>Features</strong>: 1. This is a set of clamp holders, made of aluminum alloy materials, is not easy to scratch or bend, corrosion resistance, and durability. 2. These fixtures are used together with T trough rails or slides, which are used in wood and metal processing, for holding, positioning, and fixing workpieces. 3. Push the T track and quickly fix it with the hand knob, and clamp the pressure along the embedded T groove T. 4.T screws and threaded bars: M8. T thread and threaded rod have a thread of 8 mm. Very diverse! Also suitable for clamping clamps. 5. You will get 1 x full clamp set (thread rod, T screw, knob nut, slider, gasket, splint) or 1 x t screw and plastic knob nut, complete accessories, to meet your daily needs. <strong>Specifications:</strong> Main Material: Metal Main Color: Silver Thread Size: M8 <strong>Package Includes:</strong> 1 x Whole Clamps Set (Threaded Rod, T Screw, Knob Nut, Slide Block, Washer, Clamp Board) OR 1 x T Screw and Plastic Knob Nut Only Package List