Heatshrink Joint Kit; Very Compact Joint And Suitable For Very Deap Boreholes. Very Good In Water Inviroments. The Heatshrink Has A Glue Inside That Seals Off All Points To Make Sure For A Complete Water Tight Joint. This Kit Comes With Ferrules(crimp) Included; No Other Components Needed To Complete The Joint. Cables Sizes For This Joint Is 1.5mm²; 2.5mm² And 4mm² Submersible Cable.