With the handy Bass Pro Shops Heavy-Duty Marine-Grade Tinned Copper Splice Connector Kit, you'll easily insulate your boat's electrical connections against moisture, dust, abrasion, and water. When heated with a heat gun or torch (not included), the built-in, heat-activated sealant and tubing shrinks around electrical connections to create a watertight seal. This Connector Kit from Bass Pro Shops contains 2 heavy-duty splice connectors and two 2" heat shrink tubing. Makes watertight electrical connections Tinned crimp splices Fits AWG wire Heat-shrink tubing