125pcs Heat Shrink Butt Connectors, Sopoby Electrical Crimp Wire Connector Set, Waterproof Marine Automotive Assorted Wire Terminal Kit, 22-10GA (50Red 50Blue 25Yellow) Waterproof --- Polyamide hot-melt adhesive provides excellent waterproof property, can be ideal used in marine and automobile applications. High Quality --- Comply with all relevant European standards: Hard heat shrink tubing guarantees high tensile strength and keeps it from stretch and mechanical damage; Thick copper barrel ensures every single crimp safely without destroyed, increase current flow, decrease voltage drop. 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;Operating temperature : -55125; Minimum shrink temperature : 80C; Fully recovery temperature : 130C. 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.