Construction Reamer, Hex Nut Shank With Safety Magnet Shank, Large End Dia. (In.) 1-3/8, Shank Dia. (In.) 2, Flute Length (In.) 7-3/8, Overall Length (In.) 10, left Sprial Right Cutting, HSS M2, Black Oxide Finish, Use Them To Ream, True, Enlarge, Align And Debur Holes In Structural Steel Members Such As I-Beams, Angles, Channels And Plates