Breakaway header is like the duct tape of electronics. Its great for connecting things together, soldering to perf-boards, fits into any breadboard, etc. Adafruit go through these guys real fast, and thought that given how handy they are, they'd offer them in a pack of five!
Each pack contains 5 x dual row, right angle male 2x36-pin long headers, 0.1" pitch, that can be stacked next to each other on a 0.1" grid and broken apart easily with pliers or diagonal cutters. They're even gold plated so they wont oxidize!
Break-away 0.1" 2x36-pin strip right-angle male header (5 pack) (0:25)