500PCS Red Solder Seal Wire Connectors AWG22-18,haisstronica Marine Grade Waterproof Solder Wire Connectors,Heat Shrink Butt Connectors,Insulated Butt Splice Electrical Connectors

Product description Waterproof The hot melt adhesive adds extra moisture resistance and strength which creates a tighter connection compared to the hot melt glue of ordinary connectors Rock-Solid Connection The enough solder around the wire melts and flows until forms a seal on the wire Ensure a long-lasting connection including making a larger connection