10pcs/set 3-12mm Alloy Round Shank Multi-function Impact Drill Bit Concrete Wall

Details: *High hardness 40Cr is basic more resistant to impact and hard to break *YG8 box gold cutter head alloy Baidu Gundam HRC89-92º the opening is neat and flat * Sharp cutting edge vacuum heat treatment fast drilling speed longer service life of cutter head * Nickel plated surface brighter and smoother good chip removal effect *Universal round shank drill tail can be used for ordinary electric drill and impact drill easy to use Specification: Material: Carbide Category: Carbide Impact Drill Tool holder type: round handle Cooling type: external cooling Blade diameter: 3-12mm Blade length: 32-90mm Full length: 60-150mm Handle diameter: 3-10mm Specifications: 3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm 12mm Features: The flat products are neat and flat the cutting resistance is small and the hole is easily punched Uses: suitable for work on concrete wall hard brick and other materials easy to use not easy to break Equipment: can be used for impact drill/hand drill Package include: 10*Drill Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.