210pcs Heat Shrink Connectors, Sopoby Solder Seal Wire Connectors & Heat Shrink Butt Crimp Connectors Electrical Connectors Waterproof Assorted Wire Terminal Kit, 26-10GA Waterproof --- Polyamide hot-melt adhesive provides excellent waterproof property, can be ideal used in marine and automobile applications. Durable --- Excellent stretch and mechanical damage resistance; Ideally translucent provides tensile strength; High elasticity keeps steady performance. Usage --- For best results use a hot air gun until it reduces in size and the adhesive flows, filling gaps within the terminal. What you get --- Heat shrink wire connectors: 10 yellow, 60 red, 45 blue, 20yellow; Solder Seal Wire Connectors: 10 white, 30 red, 25 blue, 10 yellow. Money back guarantee!! If for some reasons you are not completely satisfied with your purchase, please contact us anytime you feel convenient, refund is guaranteed.