The D'Addario Tour-Grade String Change Kit promises professional string changes in any environment. The string winder utilizes a premium ball bearing socket to easily turn any tuning peg and features a collet design bridge pin puller that captures bridge pins as you remove them. The string cutter features long-lasting hardened blades and compound-action design to provide over seven times the cutting force of standard pliers, making it easy to get through even the thickest strings with ease. Both tools come in a highly durable, over-molded case, which doubles as a neck rest, so players, luthiers, and techs have everything they need to change strings like a pro.