Feature:1. 180# has a smooth surface, which can perfectly remove natural nails and cuticles.2. 120# Helps you quickly shape and smooth your nails. 80# can easily remove gel covering or artificial nails.3. Made of highquality sandpaper, it has high hardness, abrasion resistance, and will not fall apart during use.4. Shank diameter of the drill bit is 2.35mm, which is suitable for most nail art machines. It is used for smoothing, shaping and polishing all nail art.5. Simple and convenient to use, insert the sanding bands into the drill bit, and then you can nail the manicure.Specification:Item Type: Sanding BandsMaterial: Sand Paper, Metal Quantity: 70pcs Brown + 70pcs Black + 70pcs White + 1pc Shaft Grit: Brown 80#, White 120#, Black 180#Shaft Diameter: Approx.2.35mm / 0.09inSanding Bands Diameter: Approx.1.3 x 0.8cm / 0.5 x 0.3inUsage: 80#: Remove gel or nail polish, also can be used to shorten acrylic or artificial nails120#: Can file nails and shape smoothly180#: Remove the cuticle on natural nails, please keep the nail drill at a low speed.Package List:70 x Brown Sanding Bands70 x Black Sanding Bands 70 x White Sanding Bands1 x Shaft 1 x Storage Box Note:Please allow a little error due to manual measurement. Thanks for your understanding.