Crystal Nails Butterfly Forms (9 ratings) Crystal Nails Butterfly Forms £19.95 Quantity: at £19.95 each Add To Basket Matchless quality, with wider wings and a longer design. For longer and newly designed nail shapes. Also has a stiletto help line on its printed scaling. TIP: Stick the wings of the nail form together carefully, since it sticks very strongly, you won't be able to open it again and correct it. Roll of 300.