Features: Length: 2” Shank: 1/8” Tapered Diamond Coated Tip For use with Dremel Type Rotary Tools and Other Similar Products Diamond Coated Accessories will cut into Glass, Wood, Metal, Stone, etc... Includes: 10 Diamond Reamers 1 PVC Pouch For Longer Lasting Life, use at low Speeds (5,000-7,500 rpm) and with a Coolant Such as Water.