This is a sturdy clamp special for fastening pet dog grooming arm and table. ① It is sturdy clamp ② Clamp opens up to 1.96 inch ③ You can fits on any table which less than 1.96 inch thickness. ④ Your grooming arm should be square tube,Less than 0.8*0.8 inch size ⑤ Only clamp ,not includes arm and table.