With these Dual Tips, you can achieve long nails quickly and easily. They allow you to quickly and perfectly shaped extension of your natural nails, and this without much filing work.The easiest way to use them is with a stable material such as acrylic gel, which you combine with the acrylic gel liquid.The easiest way to achieve an absolutely even underside is to turn your hand over briefly and distribute the material evenly with the brush in the Dual Tip before it hardens.