Cable connector with grease insert from You receive a set of 20 cable connectors with grease insert. The grease on the connectors prevents water from entering them, you can use our product outdoors without fear, any water infiltration being prevented. Method of use: FirstMounting the cable connectors is also very simple. ThenSimply bring the cable to be connected close to the connection hole and press together. Then: With the help of a little pressure, for example using pliers, the U-contact under pressure penetrates the insulation and thus creates a secure and long-lasting connection. Another advantage, you do not you don't need to strip the cables. Fast, simple and safe! Package Content: - 20 Connectors Note: The data are all manual measurement, please allow an error of 1- 3cm; due to the difference in light and display, there would be a certain color difference, please refer to the actual object received.