Vevor | | Heat Shrink Butt Connectors, 330PCS, Waterproof Solder Seal Wire Connectors Kit, Electrical Terminals Insulated Wiring | White, Red, Blue, Yellow | White/Red/Blue | Best Buy

Featuring four color-coded sizes (white, red, blue, yellow), this kit covers wire gauges from 26 to 10 AWG (0.25–6.0 mm²). Solder ring, dual hot melt adhesive, and polyolefin tubing ensure strong conductivity and a tight seal. IP67 waterproof rated for marine, automotive, electrical, and home use

$17.90