Baomain 50 pcs 22-10 AWG DuraSeal Heat Shrink Butt Splice Connector Terminals Splices Kit Copper Core 16-22 AWG +16-14 AWG +12-10 AWG Color: Red Yellow Blue Standard crimp and then seal heat shrink butt connectors; Guaranteed to hold the strong crimps Dual-walled design, polyolefin tubing in outside and hot melt adhesive in inside Package Content: Red*20pcs+Blue*20pcs+Yellow*10pcs