Cheap And Discounts M5=4.2x16-5.0x5mm'' 2pcs HSS-M2 Chamfering drill Center drill-C use M5 Tap Drill, chamfer, one time good Processing: steel Wholesale. Buy Directly From Merchant CNC tool discount store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.