air pressure: 90psi                                               

air inlet: 1/4"                                         

hose size: 3/8"                                       

free speed: 5000rpm                        

material: 35 crmo                              

overall length: 91 mm                        

weight: 1.1kg                                      

color: black    

 

1. This air engraving pen is made of 35 crmo, good in hardness and flexibility, mainly uses for engraving on the stones, durable and less loss.                                         

2.The non-slip handle design make mach  convenience and safety in the work.                                          

3. It is small in size and light in weight, more easily to control and operation,  powerful carving ability help to engrave more clear and beautiful logo.