200PCS Solder Seal Wire Connectors About Haisstronica Brand Product is king" is the original purpose of all products. We are committed to every detail of product quality. Offering better product solutions for customers. When crafting our connectors, we use highest quality copper, solder, and adhesive lined tubing.We design all our connector kits to have enough connectors to take you through numerous wiring projects without having to restock. Haisstronica is committed to delivering high quality product, and meeting our clients needs for each and every electrical application. At Haisstronica we believe that every connection counts. We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, please contact us.We will work on every inquiry to ensure your satisfaction. Specifications: 65 x Red Connectors: Diameter 2.7 mm, Cable cross-section 0.5-1.0 mm² (A.W.G.:22-16)65 x Blue Connectors: Diameter 4.5mm, Cable cross-section 1.5-2.5 mm² (A.W.G.:16-14)20 x Yellow Connectors: Diameter 6.0 mm, Cable cross-section 4.0-6.0 mm² (A.W.G.:12-10)50 x White Connectors: Diameter 1.7 mm, Cable cross-section 0.25-0.34 mm² (A.W.G.:26-24)Shrinkage ratio 2:1Dual-walled design tubing: polyolefin tubing on the outside and hot melt adhesive inside Color coded connector tubingHeat activated waterproof adhesiveLow temperature solder sleeveMinimum shrink temperature: 80°CMinimum temperature for solder to melt: 138°C