More Convenient and Faster - A of , different color terminals with recognizable markings, just measure the wiring diameter to quickly select the right connector, easy to use, no crimping, no electrical tape, only with a heat can be completed. Better Sealing Performance - Each butt connector has two hot melt adhesive rings to protect the wire and that they can withstand wet environments. During the heat shrinkage process, the welded can tightly wrap the wire to the Good electrical conductivity. - High transparency adhesive-lined polyolefin tubing for direct visual inspection,this self-soldering is made of more friendly to the environment heat shrink tubing, lead- high purity solder rings and sealed hot melt adhesive to easier wiring connections and save time. Versatile - Easy to and carry. Butt terminals Suitable for marine, automotive, electrical or other outdoor projects. Excellent stability, water resistance and electrical conductivity provide long-lasting connections. Connector Type:Butt Splice Contact Material:Polyethylene Solder Insulation Material:Polyolefin Stud Size 26-10A.W.G. White 35PC Red 50PC Blue 45PC Yellow 10PC To avoid shrink tubing melting the solder ring, our heat shrink electrical connectors have been modified to employ proprietary material in the butt connectors. The success rate of joining wire has significantly increased. Note: due to different production batches, the plastic box is random, 't accept the specified color Colour: Material:PE Package Contents: 140 x Solder Seal Wire Connectors