30Pcs 0.5 mm Diamond Coated Hole Saw Drill Solid Bits For Jewelry Gems Glass Tile Ceramic Marble Granite The diamond coated hole saw suitable for use in drill hole on Jewelry, Gems, glass, marble, tile or granite. Head Diameter :0.5mm Total length :42mm (1-21/32") Drilling depth:3mm depth Shank diameter:2.35mm (3/32") Quantity:Total 30 Pcs Material:Metal, diamond Color:Silver Tone Drilling speed:Drill a Holes In Seconds Use with water as a lubricant Quick Tips 1.Please add water for coolant and drill slowly 2.Start drill at 45 Degree to surface and align to 90 Degree as hole forms 3.Never use drills while machine is in hammer action. 4.Holes Require No Futher Work As Cutting Is Clean We Can List Any Size (Head Diameter from 0.4mm - 3mm)& Amount Of This Product. Just a friendly reminder: The item Shank Diameter:2.35mm(3/32"); Suitable for electric nail drill, carving machine with a 3/32" collet.Not suitable dremel3000
If your tools is Dremel4300-8050,they have an Universal 3-jaw chuck, then the grinding bit can be installed directly. But it is NOT suitable for dremel with 3mm 1/8" chuck (such as:Dremel3000 and Dremel4000), maybe you need add the Universal 3-jaw chuck for Dremel(Our package does't contain 3-jaw chuck).

Product Name:diamond drill bits for glass jewelry, drill for jewelry making, 0.5mm diamond drill bit
Head Diameter :0.5mm, Shank diameter:2.35mm (3/32"),Suitable for electric grinder, carving machine with a 3/32" collet.
Quantity:Total 30 Pcs, Use with water as a lubricant
Used for Grinding in ceramic, glass, precious stone.