PORTER-CABLE Pc1Pak 2-1/2-Inch Finish Nailer Compressor Combo Kit Innovative shroud allows for better protection and portability 150 psi max allows users to drive more nails than a traditional 135 max psi compressor 6 gal tank allows users to drive a large quantity of nails on a single tank charge 2.6 SCFM at 90 psi allows for quick compressor recovery time, per ISO1217 34 lbs weight allows compressor to be easily carried 34 lbs weight allows compressor to be easily carried