Cheap And Discounts YZH 120L Carbide Twist Drill Diameter D1.6-D17 Solid Tungsten Bits HRC50 CNC Straight Handle Drilling Hole For Metal Iron Steel Wholesale. Buy Directly From Merchant YZH Tools Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.