The Bitcraze Long Pins (19+2+4mm) are replacement components designed for use with the Crazyflie 2.x expansion deck system, enabling the attachment of up to three decks. These pins are optimized to accommodate two decks on the top and one on the bottom of the Crazyflie 2.x. Each pin features a 10-position configuration with a spacing of 2mm and a thickness of 0.5mm. The sections of the pin include a 19mm pin, a 2mm plastic segment, and a 4mm pin. The overall dimensions of the product are 25x20x2mm, and it weighs 0.6g. Included are four long pins, making it an ideal choice for integrating with components like the Color LED deck.