Standard crimp then seal heat shrink butt connectors Guaranteed to hold the strong crimps Dual-walled design, polyolefin tubing in outside hot melt adhesive in inside Allows visual inspection, prevents corrosion, provided a waterproof seal For best results use a hot air gun until it reduces in size the adhesive flows, filling gaps within the terminal Colors:white Size: white connector: Suits cable/ wire sizes 0.25-0.5mm2,26-24AWG,28mm 100pcs X Heat Shrink Butt Connectors Color: