- Three colors are available, which is enough for your daily use. - Full insulates and protects electrical connections. - The crimp butt connectors kit is made of high-quality material, which is sturdy for long time use. - The insulated straight electrical connectors belongs in the toolbox of every electrician and hobbyist from DIY enthusiasts to the seasoned professional. Red Butt Connectors: - Color: Red - Suits Cable:0.5-1.5 mm² - Wire Sizes: 22-16 A.W.G - Max Current=19A Blue Butt Connectors: - Color: Blue - Suits cable:1.5-2.5 mm² - Wire Sizes: 16-14 A.W.G - Max Current=27A Yellow Butt Connectors: - Color: Yellow - Suits cable:4.0-6.0 mm² - Wire Sizes: 12-10 A.W.G - Max Current=48A