Grip Rite Pneumatic Nailer GRSB150 1 1 2 Inch Metal Connector (30 to 34 Degree Paper Collated Compact Single Blow Joist Hanger Framing Tool) Carbide Forestner Bit these bits are specifically designed these bits are specifically designed to withstand the extreme heat generated by drilling into hardened materials 53 mm) Protective Surface Coating Perma SHIELD® Non Stick Anti Friction Barrier Plunge Cutting Feature Self Starting Fast Plunge Tip Point Shank Interface Style Universal 0 Joist Hanger Installation: Fastening face mount and top flange timber joist hangers between 12 inch on center floor and ceiling joist cavities A precision probe nosepiece guides the exposed fastener point squarely into metal connector holes before firing