high volume powerful industrial air blow gun with 14-21 inch extensible stainless steel air flow nozzle,pneumatic air compressor accessories tool dust air blower gun-extended to 26 inch total size jastind <b>specification:</b><br> air inlet quick plug : 1/4 in <br> maximum air velocity:17.7cfm<br> operating pressure : 80-110psi<br> maximum pressure:185 psi<br> noise level:71db<br> size:16 inch<br> extended size:16 inch<br> <b>notes:</b><br> this pneumatic air blow gun needs an air compressor with 1/4" female coupling as air source, suggested working pressure is 80-110psi.<br> don't take the blow gun apart,or it will leads to air leakage and unfixed damage.<br>