Cheap And Discounts WC C40 SD55.5 55.5MM - 60MM U Drilling Shallow Hole indexable insert drills 2D 3D 4D Fast Drill Bit CNC For WC Type Inserts Wholesale. Buy Directly From Merchant gstoor Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.