* Requires use of an air hammer/chisel with 0.401”(10mm) 
   shank size. 16-18 gauge sheet metal, depending on the air 
   hammer used and operating air pressure.
* Key features of the pneumatic panel crimper:
   performs panel patching jobs fast and in a uniform manner
   heavy-duty chisel with 1/2" diameter 0.401”(10mm) parker shank.