Cheap And Discounts 8.6mm--11.6mm 10pc HSS-Co M35 High Speed Steel Deep Hole Drill Bit Standard Length Straight Shank Tools for Electric Drills Wholesale. Buy Directly From Merchant HengXin-Practical Factory Store Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.