McMaster 1867N82 Thick-Wall Galvanized Steel Pipe Nipple, Threaded on Both Ends, 2 NPT, 3" Long 38UU83 The bits are made from

The bits are made from steel and have hex shanks that fit 1/4" power drills

0% + 3) +/-(1

(1) 7/16 Standard 6-Point

They are made of alloy steel and have a nickel plated finish

For M8 Screw Size (200 Pieces)

McMaster 1867N82 Thick-Wall Galvanized Steel Pipe Nipple, Threaded on Both Ends, 2 NPT, 3" Long 38UU83 The bits are made fromMade of galvanized iron or steel, this pipe has fair corrosion resistance. It has thick, Schedule 80 walls for good strength in medium pressure applications. Welded pipe has a weld bead on the inside. For Use With Air, Natural Gas, Steam, Water Shape Straight Type Pipe Schedule 80 Threading Threaded on Both Ends Connection Type Pipe Connection Style Threaded Gender Male Pipe Size 2 Length 3" OD 2 3 8" ID 1. 939" Wall Thickness 0. 218" Thread Type NPT