As the popularity of pneumatic tools continues to grow, more and more manufacturers are redesigning existing tools and developing new ones to meet the demand of professional contractors and active do-it-yourselfers. Case in point: Duo-Fast just recently introduced a brand-spanking new air-powered nailer--the Model DF225C Coil Siding Nailer--that's specifically designed for installing siding, decking and fencing. And while this new high-performance tool will certainly save you the drugery of hand nailing, that's only part of its appeal.