This 2.54 MM pitch 40 Pin Male Double Row (2×20) Pin Header Strip Breakable – 2 Pcs is used with custom PCBs or general custom headers. 2 rows of 20 pins each that can be cut into the desired section.
 
Specification
Connector: Pin Header
Connector type: Pin Strips
Connector type: Male
Number of pins: 40(2×20)
Row: 2
Spatial orientation: Straight
Contacts Pitch: 2.54 mm
Dimensions: 50 x 20 x 12 (LxWxH) mm
Electrical mounting: THT
Type of pin configuration: 2×20
Contact plating: Gold flash