Fasco SCFP1013CSEG Scrail Fastener  Coarse Thread 20-22-Degree Plastic Strip Electro-Galvanized Square Drive, 3-Inch x .113-Inch, 1000 Per Box The Faster Fastener! Install with the speed of collated nails, but with the holding power of screws Electro Galvanized Finish Twice as fast as ordinary collated screws Eight times faster than bulk screws Can be used in most popular nailer's Saves time and labor costs