D'Addario LubriKit is an easy-to-use lubricant for friction points, including string nuts and saddles on all stringed instruments. Friction is at the root of many tuning problems. Just a drop of LubriKit removes friction so you can play in harmony. The easy-to-use formula comes in a syringe-style applicator with 2 pads to penetrate tight spaces. A simple drop into each string nut and saddle slot allows strings to glide effortlessly, preventing friction that can cause stringing and detuning. LubriKit can also be used for all points of contact with floating bridges and string height adjustment screws.