Insulated Spade or Blade Connectors also known as Quick Disconnects which are electrical terminals used to connect and disconnect wires easily.
Features :
Insulation: Color-coded PVC insulation (red, blue, yellow) indicates wire size compatibility and provides protection.
Material: Typically made of tinned copper or brass for good conductivity and corrosion resistance. 
Connection: The flat blade design allows for a secure and quick connection to corresponding male spade connectors. 
Usage: Used in automotive, household appliances, and various electrical wiring applications. 
Installation: Crimp the connector onto a stripped wire using a crimping tool for a secure connection. 
Sizes: Available in different sizes to accommodate various wire gauges. 
Types: Male and female connectors are available for mating connections. 
Durability: Designed for durability and optimized for operating temperature.