ITEM NAME:10x Single Row 40P 40 Pin 2.54mm Female Header Connector Socket For Arduino0K 1. Gender of Connector: Female 2. Pitch 2.54mm. 3. Number of Pins: 40 Pin 4. Type of Row: Single-Row 5. Type of connector: Straight Package Included: 10 x 40Pin 2.54mm Single Row Straight Female Pin Header Strip PBC Ardunio.Gender of Connector: Female. Pitch 2.54mm. Type of connector: Straight.