Ginsco 30pcs Insulated Heat Shrink Butt Wire Electrical Crimp Terminal Waterproof Connector 10-12 AWG Size: Yellow connector: 10-12 AWG Standard crimp and then seal heat shrink butt connectors Dual-walled design, polyolefin tubing in outside and hot melt adhesive in inside Allows visual inspection, prevents corrosion, and provided a waterproof seal Package includes: 30 X Heat Shrink Butt Connectors