: different nail drill heads for different applications Pack of 30 nail file bits type: Including flame bit, pin bit, safety bit, cylinder bit, ball bit, micro ball bit and needle bit. Improve manicure effects The preparation grinding head of the manicure can effectively remove uneven and roughness from the nail surface, make the nail smoother and even, create a good basis for the subsequent manicure process and make the manicure effects more outstanding. Strong and stable. These cuticle cutter bits are characterised by superior strength, sharpness, durability, heat resistance and corrosion resistance, thanks to the high-precision diamond metal material. Comfortable and easy to use. The design of the grinding head for nail art is simple and easy to use. Simply insert the nail art device to start operation, eliminate the cumbersome manual steps and save considerably time and energy. Specification: Material: Tungsten Carbide Head surface: diamond-coated Diameter of the drill shank: 3/32" / 2.35 mm Grit: green - 100 grit, blue - 140 grit, red - 200 grit, yellow - 240 grit. Total Length: 45 mm / 1.77" Box contents: 30 x nail drill bits. 1 x plastic storage box. SAFETY WARNING Pack of 30 nail cutter attachments, nail cutter bitsNail cutter bits are suitable for natural nails or artificial nails and are perfect tools for nail salons, beauty salons or personal manicure pedicures, etc. The 2.35 mm / 3/32 inch diameter of the grinding handle is suitable for most electric or rechargeable manicure devices. The diamond nail cutter does not hurt the natural nail and can be easily used to clean the cuticles and acrylic gel. The replacement bits for nail cutters are made of tungsten steel, the head is coated with diamond, which provides excellent strength, sharpness and durability. 30 different nail cutter bits with different shapes can remove nail gel, remove dead skin, file, polish and reshape nails.