Features‎:‎Diamond coated bur set with 2.3mm shanks30 pieces assortment of various shapes and sizesBits come in different sizes and coarseness to satisfy any technologyFit most professional electric drills‎,‎ best for replace nail drill bitsCan be used to various applications including carving‎,‎ grinding and etching on a variety materialsItem Type‎:‎ Nail Glitter Materials‎:‎ Metal Package weight‎:‎ 0.112 kg Product Size ‎(‎ L x W x H ‎)‎‎:‎ 4.50 x 12.00 x 1.00 cm / 1.77 x 4.72 x 0.39 inches Package Size ‎(‎ L x W x H ‎)‎‎:‎ 14.00 x 6.00 x 2.00 cm / 5.51 x 2.36 x 0.79 inches Package Content‎:‎ 30 x Diamond Burr Bits Drill