The fn81t1 delivers the power and durability demanded by professional contractors for all-day performance on the toughest job sites. It drives a wide range of plastic collated nails from 0.113 In. To 0.148 In. In diameter and 2-3 in. In length. Upgraded features include an ergonomic design an in-line magazine for a clear line of sight and a tool-free depth of drive for quick adjustments.