[WIDE APPLICATION]for a hold down clamp for use with T-slot track and auseful in many woodworking & metalworking applications for work holding, positioning, and fixturing [HIGH QUALITY]Puts clamping pressure anywhere along the -mounted T-slot T-track. [EASY TO USE]The Hold Down Clamp is easy to clamp wood to a drill press table or any work surface. Features:Slides into T-track & quickly secures with the turn of the hand knob nut. Specifications: Thread Size: M8 colour: black + silver Material: metal Package Contents: 2 * tools (T Screws and Plastic Knob Nuts) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.