The nail trainer practice hand’s fingers pivot and rotate like human finger ,you won’t believe how life-like it is.Practice any nail skill or nail application on the nail trainer practice hand as if you were using a human hand. It’s flexible just like a real hand. Fingertips feel just like real fingers. Wrist is flexible. Finger articulate and flex just like a real hand. The arm is movable. Replaceable tips with 5 different sizes and shapes.