【WIDE APPLICATION】 For a set of hold-down clamps for use with a T-slot and useful in many woodworking and metalworking applications for work holding, positioning, and fixturing 【HIGH QUALITY】 Puts clamping pressure anywhere along the recessed T-slot. 【EASY TO USE】 The hold-down clamp is easy to secure wood to a drill press table or any workbench. 【SIZE】 T-screw and threaded rod size: M8; Main material: metal