air tool TLL-12 Max.Free Speed : 19,000RPM Air Pressure Supply: 0.63MPA ... industry oil stone, ceramic fiber oil stone, file, bamboo piece, wooden piece.Specialties1. the accurate device of turbine structure engine of ... -12crust9.C-ring 10.inner aluminium shell 11.L-03bearing 12.S-03bearing 13.L-07,12bearing 14.S-07,12bearing ... .Ask professional staff to maintain the tools air tool TLL-12