Diamond Nail Drill Bit: Makartt diamond nail file drill bit are upgraded workmanship and designed with cross teeth which made these nail bits easier and faster to remove nail gel and clean cuticle, with low noise, low vibration, and low heat. Suitable for most nail beginners and professional nail tech used. Medium Size, #150 Grits Diamond Bit for Nail Drill: These tapered barrel diamond sanding bits have three different coarseness of grits based on their grit size. Size M #150 grits are perfect for natural and acrylic nail shaping, smoothing, and polishing the nail bed surface. Premium Diamond Carbide Bit: Made of high-quality carbide and diamond sand, this drill bit for nails is a superior strength, sharpness, durability, heat resistance, corrosion-resistant, long-lasting, and sturdy. Ideal nail tool for salons, beauty parlors, spas or personal manicures DIY, or pedicures. Safety Bits for Nail Drill: The superior craftsmanship and special design of cross teeth and diamond sand could protect your skin from being harmed and improve your nail working efficiency at the same time. Gentle and smooth used, suitable for Nail Tech or Beginners. 3/32" Universal Shank Size: Fit most electric nail drills or rechargeable nail file machines. Come with a dust-proof ring for preventing dust into the nail drill handpiece, protecting the machine.