Improve with every set. A practice hand lets you try designs without pressure, with replaceable nails you can swap as you learn. A rotating hand stabilizer gives your hand an anchor point so fine lines stay steadier, and an LED headband magnifier with interchangeable lenses helps you see small details up close. Together they make a good setup for beginners and for anyone refining their technique. Product pages list how many nails come with each practice hand and which options are available.