[ Anti-Slip Design]This small c clamp equipped with non-slip rub rubber pad, the friction is increased and it can effectively prevent falling off. [Duarable & Firm]This universal c-clamp is made of high quality aluminum alloy, with strong struction it can work for long-life, and easy to carry. [Adjustable]The desktop mount clamps is adjustable by knob, easy to operate. [Perfect for Woodworking]Package with 4pc c-clamps, it can attaches easily to desks, table, carts, , worktables, posts, headrest to the clamps, etc., Manufacturer: Mcnhbdgg