?Diamond cylindrical Nail Drill Bit?Made of diamond with high strength and cutting performance, enough to remove acrylic nail while reducing dust and heat. With great heat dissipation and corrosion resistance, reliable for long time use. ? 3 Carbide Cuticle Nail Drill Bits?2 different size spherical drill bits and a needle-shaped drill bit can be used on the cuticle area and side wall of the nail without hurting the nail. Specially designed to remove dead skin, clean the sidewall and the edge of the nail. ?Standard Size?The shank diameter is 3/32", fit for most Nail Drill Machine. Designed with 2 rotation directions, suitable for both left and right hands. Remove acrylic and gel nails efficiently. Perfect for nail salon, beauty parlor, personal nail pedicures or DIY nail art at home. ?Practical Nail Drill Bits Set?This Kit comes with a 5-in-1 Carbide drill bit, a cylindrical, 2 spherical and a needle-shaped drill bits, a nail brush bit and a 20-hole drill bits storage box. Suitable for natural and acrylic nails, a useful tool for any manicurist and Nail art lovers. ?5 in 1 Carbide nail drill bits?Various professional nail art work will be easily achieved with this nail drill bit because of the different Coarseness (Medium Fine) of the surface from top to the bottom, like sculpting, sharpening, grinding, polishing. All in one for Multi-purpose.