brand new and high quality Features: Waterproof Connectors can be used wherever wet or corrosion exists. It is pre-filled with silicone sealant to make it simple to waterproof splices and protect against corrosion. With its silicone filled twist-on cap, and one-step installation, it eliminates the need for time-consuming measures like tape, heat shrink, mastics or corrosion kits. Simply insert the wires and twist, and you can rest assured you have a well-insulated waterproof seal. Ensure any frays in the wire are straightened. Place stripped wires together and twist connector onto wires, pushing firmly until snug. Do not over tighten. The products are available for outdoor/irrigation, outdoor/electrical, direct bury and low voltage usage. Specification: Material: Silicone & plastic Dimensions: height: 23mm/0.91inch Color: Black(10pcs) & blue(10pcs) Quantity: 20 Pcs/lot Package includes: 20 x Waterproof Grease Nuts Wire Connector (without retail package)