Size:280Pcs280Pcs Heat Shrink Wire Connectors Soldering Features: 2:1 Shrink Ratio. Easy One-Step Wire Connections. Easy Identification: Tube Connector To; Color Code. Butt Connectors; Polyolefin Heat-Shrink Toe Caps Improve Abrasion Resistance. Tearing. High Quality Wire Connectors; For Gaskets, Strain Relief, Cable Testing And Insulation. Molten Solder Ensures Tightly Connected Wires And Prevents Wires From Slipping Off The Terminal. Comply With; All Relevant Standards: Rohs, Iso 9001:2008, Sgs And Ce Standards. Ip67 Waterproof The Following Design: High Pressure Polyolefin Tubing; Exterior And Hot Melt Adhesives The Interior Creates A Seal Durable Between Wire And Connector. Sealed Connectors Would Prevent Corrosion Even In The Most Humid Environments. The Transparent Sleeves Of The Butt Connectors; Ends Allow Visual Inspection. --- You Can Control The Working Temperature And Heating Time. No Crimping Required The Connectors At; To Solder And To Solder Sopoby Allow You To Use Them In Harsh Environments. Reach Or Limited. Since No Crimping Is Required, You Simply Need To Position The Stripped Wires Into The Sleeving. Solder And Apply Heat To Complete The Connection. An Easy One-Step Connection Of Wires, Insulated And Sealed. Package Included: 280 Pcs Heat Shrinkable Solder Connectors.