Engraving Tools Hammer for Graver Machine Pneumatic Handpieces High-carbon steel    
Quick Change Handpiece  
Made from fully stainless steel.
Fits most engraving and stone setting needs Inclding microscopic engraving.
Complete with 4 quick -change holders and 4 pcs Gravers.

Note :The Mini Tip Head Connector is about 5.9mm,
please confirm you can used them with your Handpiece,thanks!