Gikfun 2 Pin and 3 Pin Screw Terminal Block Connector 5mm Pitch for Arduino (Pack of 40pcs) EK8365 20PCS 5.08-301-2P 2 Pin Screw Terminal Block Connector 5mm Pitch 20PCS 5.08-301-3P 3 Pin Screw Terminal Block Connector 5mm Pitch Application: Crystal Oscillator, IC Socket, DIY PCB Universal Board, Dupont Line, Digital tube, buzzer, Arduino UNO board, PIC Programming unit, AVR ATMEL Programming unit, Connector Kit, USB to TLL Modules, Power Modules, LCD Modules, RS232 TO TLL Module 20PCS 5.08-301-2P 2 Pin Screw Terminal Block Connector 5mm Pitch 20PCS 5.08-301-3P 3 Pin Screw Terminal Block Connector 5mm Pitch Application: Crystal Oscillator, IC Socket, DIY PCB Universal Board, Dupont Line, Digital tube, buzzer, Arduino UNO board, PIC Programming unit, AVR ATMEL Programming unit, Connector Kit, USB to TLL Modules, Power Modules, LCD Modules, RS232 TO TLL Module