Max CN665 1-1/2-Inch to 2-1/2-Inch Coil Decking Nailer Rapid Fire trigger which allows for high-speed fastening. This trigger allows you to Fire up to 15 nails per second. Max patented maintenance free end cap filter prevents foreign substances from entering the tool helping internal Parts last longer, requiring less maintenance on the tool. Lightweight (6.2lbs) Dial adjustable depth control allows depth adjustment with no special tool. Light weight only 6.2lbs Powerful Speedy nailing performance Dial adjustable depth control Maintenance free end cap filter (US Patent 5637125, )