1、Wide Application: Applicable to oscillator, PCB prototype, IC socket, DIY universal PCB, buzzer, PIC programming unit, connector kit, USB to TLL module, TLL module, power module, LCD module, RS232, TLL module. 2、Easy Installation: Easy to weld and operate safely, without the need for special tools. This makes it an ideal choice for various electronic modules, components, DIY parts, and tools. 3、100Pcs in All: The screw terminals include 80pcs 2 pin screw terminal, 15pcs 3 pin screw terminal, and 5pcs 4 pin screw terminal. Various sizes can meet your needs for various devices. Also has 5mm pitch, and applicable to 14‑22 AWG wire. 4、Copper Terminal: The copper material on the PCB mount screw terminal connector has low resistance, high conductivity, durability, high temperature resistance, and versatility, making it a reliable and efficient choice for electronic circuits. 5、With Plastic Casing: The plastic shell has good durability, impact resistance, and low flammability, very durable for long term use.