Cheap And Discounts 1PCS D20 D25 D32 D40 6-32mm CNC Inner hole knife set Lathe Bushing Inner Hole Arbor Reduction Taper Shank Reduction guide sleeve Wholesale. Buy Directly From Merchant ZIMI & CKCNC TOOL Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.