This is for a set of hold down clamps for use with T-track. These clamps are useful in many woodworking and metalworking applications for holding, positioning and securing work. Apply clamping pressure anywhere along the recessed T-track. Slides into the T-track and quickly secures with the turn of the knob nut. The T-screw and threaded rod have an 8mm thread. Very versatile! Also great for fixtures and fixings. Features: This is for a set of hold down clamps for use with T-slot track These clamps are useful in many woodworking and metalworking applications for holding, positioning and securing work Apply clamping pressure anywhere along the recessed T-track Slides into the T-track and quickly secures with the turn of the knob nut The T-screw and threaded rod have an 8mm thread. Very versatile! Also ideal for mounting and fixing Features: Main Material: Metal Main Color: Silver Thread Size: M8Note: The data are all manually measured, please allow 1-3cm error, due to the difference in