Nail stencils nail stencils for artificial fingernail nails stencils. The stencils very well made are good for beginners. Nail extensions of the stencil are simple, stick well, but can also be easily removed from the finger. Stencils for extending nails. Perfect for extending the nails, holds well on the finger and can be easily removed after applying the correction gel, first loosen the top of the finger and then gently pull it down. Gel Nail Extension Stencil