The Porter-Cable TS056 is as versatile as it is tough. This tool fires both heavy-duty 3/8 in. crown staples from 1/4 in. to 9/16 in. and 18-Gauge brad nails from 1/2 in. to 5/8 in. Having this versatility allows for a wide range of fastening applications, such as insulation, vapor barrier, flooring underlayment, screening and felt paper. Oil-free operation requires no regular maintenance and eliminates the risk of oil stains.