EASY TO USE - No soldering, no crimping, just a heat to complete the junction, more faster and easier than the old SOLID CONNECTION - Double wall construction, Exterior tubing offers insulation and enhances pullout strength Hot Melt Adhesive inside guarantees wires are securely linked and wires do not from the termination, Which is very secure and waterproof DURABLE SOLDER CONNECTORS - Premium materials are engineered specifically for usage in severe situations. Keep wires safe against abrasion, cutting, scuffing, and low-impact scenarios. Furthermore, sufficient solder melts and flows through the stripped wires to provide a long-lasting connection for your application GREAT SIZES - The package comprises 3: 1 heat shrink wire connectors in the following 7 colors: white 80PCS, red 150PCS, green 35PCS, blue 100PCS, yellow 20PCS, Purple 10PCS and Orange 5PCS, which can meet multiple wiring needs (26-6 AWG) Gauge: 26-6 AWG Connector Type: Butt Splice To avoid shrink tubing melting before 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 random, Cannot be chosen style Material: PE colour: As shown Package Contents: 400 x Solder Seal Wire Connectors(3: 1 connectors: white 80PCS, red 150PCS, green 35PCS, blue 100PCS, yellow 20PCS, purple 10PCS, orange 5PCS) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.