Cheap And Discounts 1pc Hex Shank Tungsten Carbide Drill Bit 160mm For Masonary Concrete Brick Stone 5mm/6mm/8mm/10mm/12mm Drill Size Wholesale. Buy Directly From Merchant Durable Tool Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.