3/4" Male Iron Pipe x 1" Pack Joint Copper Tube SizeThe 3 4" Male Iron Pipe x 1" Pack Joint Copper Tube Size Adapter is a plumbing fitting designed to transition from a male iron pipe (MIP) thread to a copper tube. It utilizes a pack joint connection for the copper tube, ensuring a tight, leak resistant seal. Specification Value TYPE Male Iron Pipe x Pack Joint Copper Tube Size DESIGN Pack joint design that uses packing material to form a tight, leak proof seal when connecting the copper tube. WEIGHT