7.5mm Pitch screw terminal block kit. Kit includes 10 - 2 pole and 10 - 3 poles terminal blocks for a total of 20 pieces. These have max ratings of 300 Vac 10 Amps and can accommodate wire sizes from 22 to 12 AWG. The connectors have good quality clamps that will hold your wire securely. These can be soldered into place or can be used in bread boarding. In addition, connectors interlock together to make a terminal block of any length. Kit includes plastic case to keep them organized.