Cheap And Discounts PCB Drill Bit Set Tungsten Carbide Micro CNC Twist Bits For The Amber Aluminum Sheet 0.3-1.2mm 0.6-1.5mm 1.5-2.4mm 2.1-3.0mm Wholesale. Buy Directly From Merchant HXTUO Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.