Kiss those days of heat-shrink, melted jacketing and clumsily-arranged third-hand tools goodbye! Go 'cold splice' with these snap-able plastic splices for fast connections. Use with any 22-26 AWG solid core wire and slip them into the plastic splice so that they slide into the metal teeth. Then squeeze down with parallel-jaw or slip joint pliers - don't use needle-noses, they have too much angle and not enough force. We also like using our panavise to squeeze them down. This is a wire-tap splice. You can slide one half over an existing 22-26 AWG solid-core wire and then 'tap' into it with another wire. It's an easy way to tap into an existing wire without doing weird cut-solder surgery. The splices contain a little silicone jelly to keep the cold splice from oxidizing so they are a bit weatherproof. They are not waterproof. Comes in a pack of 10 pieces! They're handy so keep some around in your drawer.