The Ergodyne Squids Tool Connectors 3724 Shrink Tool Trap is a 4-inch sheath in black color designed to hold and protect electrical tools. It is made in the United States and is part of the Hand Crimpers & Strippers, Electrical Tools, and Light Equipment & Tools categories. The tool connectors are compatible with the Ergodyne Squids Tool Lanyards and can be used to connect and secure tools while working at heights.