Features: 5pcs DRILL BIT SET 15mm 20mm 25mm 30mm 35mm Bit Set 5 Pieces The bits are used for drilling in woodworking in preference to drill bits and flat bits whenever a very clean and precise hole is required They also enable woodworkers to drill holes without passing through the material when a clean and precise bottom to a hole is required It is far safer and more accurate to use Specifications: 5 cutting diameters: 15， 20， 25， 30 and 35mm It is an essential tool for woodworkersPackage Included: 1x Drill Bit Set