Husky 30 Gal. 175 PSI Oil Lubed Belt Drive Portable Vertical Electric Air Compressor Plastic Sheeting All stones are naturally created All stones are naturally created and tumbled in their natural habitat to produce the most smooth and rounded rock for outdoor gardens and interior design and landscaping Southwestern Edge Type Micro Beveled Length Type Fixed Minimum Acclimation Period 3 Days Janka Species Hardness Rating 3000 Underlayment Options Underlayment Required Sold Separately Manufacturer Warranty Limited lifetime Residential Warranty Frequently Asked Questions (FAQ): Durable Construction: Features a cast iron pump and cylinder for long lasting use 2 SCFM at 90 PSI for superior air tool operation