WT2130A Ratchet Hand Tool Rc, RBC and RD Insulated Terminals, RC6, RP7 Wire Joints. Thomas & Betts WT2130A is a ratchet hand tool that gives correct compression every time—the Shure Stake mechanism principle prevents opening of the handles until full staking action is completed. It installs self insulated and non-insulated Sta-Kon terminal series in the No.26-10 AWG wire range.