Breakaway Male Header 2.54mm : 1×40-Pin, Straight, Double-Sided 15mm

From the shop's description

40-Pin Male to Male Straight Header 40-Pin Male to Male Dual-Sided with 6mm Pins A Specialized male-to-male 40-pin header. Each male-header side measures 6mm and features a 0.1-inch pitch which can be broken into shorter lengths. The 6mm length on each side allows for both sides to be inserted into female connections. The header can be used as a female-to-male adapter. These pins are also handy for plugging into breadboards. Specifications: Max Current: 3A Max Voltage: 1000V AC Contact Resistance: 20 milliOhms max Insulation Resistance: Greater Than 1000 megaOhms Operating Temperature: -55C to +105C Contact: Copper Alloy, Gold Flash