Seamless Barrel provides for a solid crimp with no barrel splitting. Wire Stop prevents over insertion of wire and flared sleeve provides for easy wire insertion. Translucent Nylon Heat Shrink Sleeve allows for visual inspection of correct wire placement and has a 30% faster shrink time. Insert stripped wire into each end of connector barrel & crimp firmly. Slowly apply heat (212degF) until inner adhesive wall of sleeve softens, melts filling voids, and outer wall shrinks. Cool for a permanent waterproof and corrosion resistant connection.