Fit for arduino proto shield, can be applied in electronic packaging, debugging without welding. Can be fixed on a flat surface with a double sided tape on the bottom. Fit for 20 - 29 AWG wires. ABS plastic, tinned phosphor bronze contact pieceVoltage: 5 - 15 V; Current: approx. 1 A; Fit for 20 - 29 AWG wires400 Tie points: 300 in a matrix terminal strip, 100 in 2 distribution strips; Size: 3.2 x 2.1 x 0.3 inch 82 x 54 x 9 mmFit for arduino proto shield, can be applied in electronic packaging, debugging without weldingMaterial: ABS plastic and tinned phosphor bronze