Use for fine detail work?? cutting?? engraving?? carving?? touch-up and finishing</br>Use on wood?? jade?? ceramic?? glass?? hardened steel</br>Bits are covered with diamond particles</br>Use with #481 collet?? or #4486 Dremel Chuck</br></br>Product Description</br></br>Dremel Mfg. Division Diamond Ball Point?? .07 Diameter?? DRE7103</br><br/>http://www.amazon.com/gp/product/B00004UDJ5