Jumper Hacker Kits Schmartboard Jumper Hacker Kits are designed to immediately modify jumpers to the functionality needed. For example, they can be used to change a female jumper into a male jumper, connect female jumpers together to create longer jumpers, color code jumpers to different signals, or splice bare wires together. Schmartboard Jumper Hacker Kits include 42 pieces of 1' heat shrink tubes in a variety of colors and a row of extra-long headers.