Great for both beginners and amateurs, this 26-piece set of stainless steel hand drill and bits works perfectly to give you precise, accurate, and efficient hole sizes for jewelry making and carving. The mini hand drill measures 4.8 inches in length. You will receive 5 bits in the sizes 0.5 mm and 0.6 mm; 3 bits in the size 1 mm; and 2 bits each in the sizes 1.2 mm, 1.5 mm, 1.8 mm, 2.0 mm, 2.4 mm, and 3 mm.