Convenient：Heat shrink bullet terminals are designed for quick and easy connection and disconnection. They are male and female connectors that snap together to form a wired connection, Ideal for technicians and home DIY Material: Terminals are made from pure copper for excellent conductivity and durability. The 1/3 heat shrink tubing at the end provides waterproof, dustproof and insulating properties Usage:Start by selecting the correct size of shrink boot based on the wire gauge you are using.Place the male or female boot over the wire. Crimp using the correct tool to ensure the correct amount of pressure. It's a good idea to do a pull test before going any further Packaging: 220 pieces per box, these ring clamps offer value and convenience, making it easy to stock for electrical projects while ensuring high quality connections Buyer Confidence: We stand behind the quality of our products. If for any reason you are not satisfied with your purchase, please contact us. We provide customers with quality services and a guarantee for risk-free purchases haisstronica 220PCS Heat Shrink Bullet Connectors AWG22-10 Male and Female Wire Bullet Terminals Blue Red Yellow Bullet Butt Terminals Kit