This Jumper Wire is a group of 2.54mm 1P-1P Jumper wires, that are easily detachable according to your requirement. It has 1p male pin at one end and 1p female header at other ends and is well compatible to 2.54 mm header pins.
These cables are safe to use and have a protective coating over the wire with plastic plug-in point at both ends. These are mostly used in projects related to Arduino, Raspberry Pi and other PCBs and breadboards without any soldering.