Cheap And Discounts 3pcs Hexagon Shank Straight Slot Step Drill Bit Hss Pagoda 4-12/4-20/3-12mm reaming Tool Titanium Plating Suitable Thickness 5mm Wholesale. Buy Directly From Merchant DOMYTL Tool Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.