Check the listing for details. 30Pcs Diamond Grinding Bits 3mm Round Ball Carving Burrs Shank 3/32" Stone Tools. Color: Silver, Condition: New. Listed at 13.99 USD. JINGLING 30Pcs Diamond Burrs 3 mm Round Ball Coated Rotary Point with 3/32" Shank Grit 150 Code 6#-2.35mm New one box set of 30 Pcs diamond coated grinding burrs / pointed heads Specifications and shapes: Product Name: Round Grinding Stone, Ball Tipped Diamond Burr Head Diameter: 3mm( close to 1/8") Head Shapes: Round ball Total length: 45mm (1 3/4") Shank diameter: 2.35mm (close to 3/32") Suitable for electric nail drill, carving machine, machinery supporting assembly with a 3/32" collet Grit: 150 (medium) Use with water as a lubricant is better Suitable for use in grind the edge of glass, jewelry, shells, tile and stone Usage: used for mould grinding, grinding inner hole, suitable for electric grinder, carving machine, electric machinery supporting assembly, mainly used for carving glass, jade, fixed abrasive and hard objects. The electroplating diamond assorted grinding head grinding needle bar fine polishing grinding, diamond grinding head is mainly used for electric and pneumatic tools. Diamond grinding head is processes each kind of mold, hard alloy, glass apparatus, ideal correction tools such as jade carvings. We will send out your order within 1-2 days after payment has been received and cleared Please let us know if you are looking for other accessories or hardware.Just a friendly reminder: The Shank diameter of grinding bit is 2.35mm (close to 3/32")There are two different collet sizes for Dremel: 3mm (1/8") or Universal 3-jaw chuckIf your chuck of Dremel (models 4300-8050) has an Universal 3-jaw chuck, then the grinding bit can be installed directlyHowever, it is NOT suitable for dremel with 3mm 1/8" chuck (such as:models 3000,4000)If your chuck of Dremel is 3mm (1/8"), maybe you need add the Universal 3-jaw chuck for Dremel