Fluke TL238 Test Lead Set for High Energy Environmentn accessory kit especially designed for working in high energy enviroments. The SureGrip Test Probe has only 4 mm of exposed metal at the tip. Test probes with less exposed metal help reduce the risk of inadvertant shorts between each other and other metal surfaces that could result in an arc flash explosion. Probe extenders fit between modular test leads and test probes, increasing the distance between you and a live circuit by 20. 5 cm (8"). The kit