CDI 511-9770 Piercing Probe Set Fully insulated probes with spring loaded clamp. Probes with stainless steel pin self-centers and punctures insulation. Includes 1 red 1 black probe. Allows for a hands free operation while checking DVA Features Piercing Probe Set Includes 1 Red 1 Black Probe Fully Insulated Probes with Spring Loaded Clamps Probes with Stainless Steel Pin Self-centers and Punctures Insulation Replaces 511-9770 California Residents WARNING Cancer and Reproductive Harm - P65Warnin