10pcs Step Drill Bit Set 1/4 дюймов Hex Shank 5 Flute Countersink Drill Bit Set with Automatic Center Punch

Функции:- [Package includes]: 3 pieces of step drills, 6 pieces of 5-flute countersunk drills and 1 piece of center punch in the package; enough quantity and type are enough to meet your various needs.- [Step drill bit set]: made of high-speed steel and coated with titanium, various sizes of 4-12 mm, 3-12 mm, 4-20 mm. These step drills have the functions of heat resistance, corrosion resistance and rust prevention, and are practical and durable.- [Countersunk bit set]: made of carbon steel, the surface of the countersunk bit is plated with titanium to prevent rust; they are suitable for quick replacement, and are suitable for most power tools with 1/4-inch hexagonal shank, the cutting edge is hardened and polished to improve Sharpness, up to sharp and accurate countersinking.- [Automatic center punch]: The automatic center punch is very effective. It can make pits on the workpiece to prevent the screw and drill bit from shaking and drifting, so as to help you complete the work accurately and quickly, saving time and energy.- [Wide range of uses]: very suitable for drilling, reaming, chamfering, screw heads, etc.; suitable for chamfering various types of materials, such as wood, plywood, aluminum, iron, copper, fiberboard, plastic, PVC board, etc. Технические характеристики:6pcs 1/4 inch Hexagon Shank 5 Flute Countersunk Bits: материал. Быстрорежущей стали. Размер6мм, 8мм, 9мм, 12мм, 18мм, 19мм Shank Тип1/4 дюймов Hex Shank. Цвет Gold + Silver. Отлично подходит для. Просверливание отверстий