Hold down clamp for use with T-slot track.Puts clamping strain wherever along the flush-mounted T-slot T-track.Slides into T-track and quickly secures with the flip of the hand knob nut.Both T-screw and threaded rod are of 8mm threaded.Widely in lots of woodworking & metalworking purposes for paintings holding, positioning, and fixturing.Thread Size: M8Color: silver + blackMaterial: metal + plasticPackage Content: 1* Briquetting1* screw1* T slider1* handle1* screw1* gasketOnly the above package content, different merchandise are not included.Note: Light capturing and varied displays could cause the colour of the object in the picture a little bit various from the real thing. The dimension allowed error is +/- 1-3cm.