The PneuTools MC-150 is a Single-Blow Metal Connector Nailer for Joist Hanger, Truss Installation, Fencing, and Frame Installation applications. • The PneuTool MC-150 uses 34 1 1/2 Positive Placement Nails with nail shank sizes of .131 - .148 • The MC-150?s Super Compact Design (Tool height is ONLY 10.5) allows users to operate easily and effectively in between trusses, frames, or other tight areas on a job site. • This nailer"s industrial strength, light-weight die cast housing, and ergonomically designed rubber handle means comfort and consistent ease of use on every job you take it on. • The MC150 features a High Capacity, Two-Step Easy Load Magazine, a Convenient 360 Rotational Exhaust Deflector, and a Sequential Fire Trigger and Reverse Safety, so the user can operate the tool Worry Free. • It also has an Easy View, Nail-Point Installation Nose, so no clumsy probe is needed.