This is the ProTek R/C Carbon Fiber Soldering Jig. This small and lightweight carbon fiber jig is designed to quickly and easily hold your wires, Deans, XT60 and bullet connectors to make convenient work of your soldering needs.
Featuring a spring loading sliding movement, the jig opens up when compressed allowing you to insert your wires or connectors. When compression is released, the spring loaded bottom plate pulls back with clamping force, providing a secure hold while you work.
The jig features a rectangular 17x10mm slot that securely fits Deans/T-Style and XT60 sized connectors, as well as two 8mm holes to fit the bullet connector of your choice. If you just need to solder or tin wires, the vertical posts open up to 10mm providing plenty of space for a variety of wire AWG's. To keep the jig planted, four rubber feet on the bottom keep it from moving around while you work.