HACKER STANDARD DRILL PIPE With Large Opening Tool Joints is our most economical drill pipe. It is offered in sizes 23/8" OD, with .280 wall, 27/8" OD with .362 wall, 31/2" OD, with .368 wall and 41/2" OD, with .337 wall thickness. Lengths are 5', 10', 15', 20', 25', also range II and range III lengths. Pipe is offered plain end nonupset, external upset or internal upset, depending on tool joints required.