1/8" Shank Diamond Burr Bits Set Drill Bit Kit for Glass Gemstone Metal Grinding Rotary Tool

1/8 inches Shank,20 Pieces variety of bits per box, come with 3 boxes,total 60 bits Practical - Suitable to be used with hand drills,flex shafts 1/8" Shanks good for most rotary tool ,Craftsman and more Used by Jewelry Designers for drilling clean holes Experience needed,you may break few bits during practice.Use with water,do not run dry