Oil-less design. High Performance PTFE Piston Ring. Stainless steel Valves. Moisture and Dust Resistant. Gearless Direct-Drive Motor. Anodized Aluminum Alloy Cylinder. Automatic Reset Thermal Overload Protector. Aluminum Sand Tray with Vibration Isolators. Deluxe Dual Compartment Carry Bag. 25 ft. Quick Connect Extension Hose with Heat Shield. Gas Station-Style Tire Gun with 200 PSI Gauge. 3 Piece Inflation Tip Kit. Dual Battery Clamps with 40-amp Inline Fuse Holder. 450P-Automatic is VIAIR's first Automatic shut-off function portable compressor. Thks 100% duty cycle unit is capable of pressure up to 150 PSI and can be operated for up to 40 minutes at a time before meeding to be rested. The 450P-Automatic comes with a close-ended gas station-style air gun for added convenience.