Cheap And Discounts BB 1mm-20mm Carbide Reamer Coated Spiral Straight Flute H7 Chucking Hardened Steel Metal Cutter 4 6 Flute CNC Hole Tool Wholesale. Buy Directly From Merchant BB Official Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.