This is a nail art dotting tool. I made this for my wife who is a nail tech. All 3D print ready.I use a Anycubic Kobra 2 Pro to print these with (PLA) and the bits fit great. You might have to lay the bits on the side to print with supports depending on your printer and its tolerances.Pack comes with:1.) Holder/Handle2.) 0.75, 1, 1.5, 2, 2.5, & 3mm Ball end Bits with Pointed bit as well.All bits are quick to print and easy to install. You can clean or dispose of them.Enjoy :)