Swanson Tool T04424 Wood Magnet Use as a post level on any 2-by- material--2-by-4, 2-by-6, 2-by-8, etc Use as a hands free stud level, plate level, screed level, or post level Use with 4-by-4 posts and pipe up to 4-inches in diameter ABS hi-impact body 3 easy to read vials and cushioned rubber grip