Prototype Screw/Terminal Block Board Kit For -2560 R3.The Kit includePrototype PCB, Terminal Blocks, Female Header Sockets.Unassembled, mount methods, you can make flexible use.PCB:FR-4 fiber glass PCB, dual copper layers, size 120mm x 78mm.Pads grid / pitch 2.54mm / 0.1inch, hole diameter 0.8mm.Terminal block pitch 3.5mm / 0.138inch, hole diameter 1.2mm.Terminal Block:Pitch 3.5mm / 0.138inch mini terminal blocks, 84 pins(3pole x24pcs, 2pole x6pcs ).Wire range 26~16AWG, strip length 5mm, screws M2 steel, pin header and cage brass.Female Header Socket:Pitch 0.1inch/2.54mm, pin length 0.59inch/15mmSingle row 10pin x1pcs, singal row 8pin x 5pcs, dual row 18pin x1pcs.colour: as shownMaterial: ABSPackage Contents:1 x Terminal Block Board kitOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.