Carbide 'M"This is silver carbide bit with an x cut design. This bits smooth top design protects the skin, prevents damage to cuticles and contours to the nail without leaving behind grooves. It's perfect for surface work such as smoothing product and prepping for top coat, as well as shortening acrylic and dip powder, backfill cutting and creating a sharp c curve. The fine texture of this bit is perfect for removing lifted areas around the nail bed, without