The Porter-Cable PIN138 pin nailer uses 23 Gal. headless and slight head pin nails from 5/8 in. to 1-3/8 in. length. It has a long life, maintenance free motor to keep from staining the work surface. It has consistent power and penetration to sink 1-3/8 in. nail sub-flush into Oak. It has a rear exhaust to keep contaminates away from work surfaces. It also incorporates a dry-fire lock-out that alerts user to re-load nails and eliminates empty nail holes. It has a narrow nose design with a removable non-marring nose tip with on tool storage space. The tool automatically adjusts for different fastener lengths for easier loading and less problems with pins out of spec. It has a convenient side-load magazine that holds 130 micro pin nails and a reversible belt clip to keep tool close to user.