Description: This is a breakout for the SOIC version of the 74HC595 register IC. Clock in data and latch it to free up IO pins on your micro. All pins from the IC are broken out to standard 0.1" spaced headers. The Serial in and out pins are on opposite sides of the board with the remaining pins carried over so that multiple register boards can be chained together. Specification: Dimension: Approx. 30 x 26 x 4mm Package Includes: 5 Pieces 74HC595 Register Breakout Module : Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks ! Description: This is a breakout for the SOIC version of the 74HC595 register IC. Clock in data and latch it to free up IO pins on your micro. All pins from the IC are broken out to standard 0.1" spaced headers. The Serial in and out pins are on opposite sides of the board with the remaining pins carried over so that multiple register boards can be chained together. Specification: Dimension: Approx. 30 x 26 x 4mm Package Includes: 5 Pieces 74HC595 Register Breakout Module : Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks ! Description: This is a breakout for the SOIC version of the 74HC595 register IC. Clock in data and latch it to free up IO pins on your micro. All pins from the IC are broken out to standard 0.1" spaced headers. The Serial in and out pins are on opposite sides of the board with the remaining pins carried over so that multiple register boards can be chained together. Specification: Dimension: Approx. 30 x 26 x 4mm Package Includes: 5 Pieces 74HC595 Register Breakout Module : Color maybe slightly different due to different monitor. The above size is measured by hand, please allow slightly difference. Thanks !