Yes, it is. There are two options: 1) To buy a jumper wire kit with pre-cut to certain lengths wires. 2) To buy special spools of wire, so called hookup wire, and with a help of a wire stripper strip off some of the insulation and make your own jumper wire. Tip: if you decide to buy your own hookup wire, make sure you are buying solid-core wire (a wire, made of a single piece of metal; it’s very stiff and easy to push into the breadboard) and (made of multiple individual smaller strands, it’s more difficult to deal with).