Machining Tool Kit 2 Inch Boring Head MT2 Shank 9Pcs 1/2 Inch Rod Boring Bar Set For Precision Boring Head Kit Boring head size: 2 inches; thread: 3/8-16; connecting thread: 7/8-20 Product features: 2 inch boring head, With MT2 shank(end thread 3/8-16) 1/2 inch boring hole,thread 7/8-20 max offset 5/8 inch graduation .001 inch With high quality plastic box Description The set comes in a plastic box for easy portability MT2 Shank end thread 3/8-16 The carbide tipped 9-piece boring bar set includes three different length boring bars each for minimum bores of 5/16, 7/16, and 9/16 The set is made of high-quality materials and is sturdy and durable Portable Line Boring Sets | International Revere Machining Set includes: 1 x 2 inch boring head, 1 x MT2 handle combination kit, 9 x 1/2 inch boring bars and 3 x hex keys