These Dremel (9924) carbide engraving tips are specially designed engraving bits for Dremel engraver 290 The engraving tips are ideal to use on ceramic, hardwood, leather, plastic and softwood Suitable for use with Dremel 290 Engraver which is a specialty engraving pen tool featuring reciprocating action for optimal engraving control Included: 3x carbide engraving tip Fits with all Dremel Multi-/Rotary tools or other 3,2mm shank size multi- / rotary tools, Weight: 0.0110231131 pounds, Manufacturer: Dremel