Cheap And Discounts DT-DIATOOL 1pc Adapter For Diamond Drilling Core Bits M10 Male thread to M14 Female Converter Diamond Grinding Wheel Hole Saw Wholesale. Buy Directly From Merchant DT-DIATOOL Diamonds Tool Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.