The larger size PCB board prototype kit includes 1 piece of 3.5x5.9 inch (9x15cm) board, 2 pieces of 2.8x3.5 inch (7x9cm) boards, as well as 3 pieces of 2.0x2.8 inches (5x7cm) and 5 pieces of 1.6x2.4 inches (4x6cm) 1.2x2.8 inches (3x7cm), and 0.8x3.1 inches (2x8cm) boards to meet various project requirements. The thimble set consists of 6 straight male needles, 6 straight female needles, and 4 right angle pin head female needles with each row containing 40 pins spaced at intervals of 0 .1 inch (2 .54mm). Terminal jumpers are inclusive of six sets of two-pin terminals, four sets of three-pin terminals, along with a hundred standard jumper caps with a pin pitch board spacing at the standard measurement of 2 .54mm. These rugged and durable PCB boards are constructed from high-quality FR4 fiberglass material that is both robust and resilient, measuring at a thickness of 1 .6mm. Featuring a convenient design, each board is equipped with four mounting holes in the corners for easy assembly. Pre-tinned holes on the circuit board simplify component and sensor soldering for seamless project integration. Colour:As Shown Material:PCB Package Contents: 1x Circuit Board Prototype Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.