Simpson 1 in. x 13 in. SDS-Max Quad-Head Carbide Drill Bit MDMX10013Q for Rotary Hammer Hinge Boring Bits It features uniformly brazed carbide

It features uniformly brazed carbide inserts for longer bit life

The HU316 is designed for a nominal joist size of 3x16

Hole Diameter: 1/2 in

See the HSURC or HSULC series for concealed-flange configurations

Simpson 1 in. x 13 in. SDS-Max Quad-Head Carbide Drill Bit MDMX10013Q for Rotary Hammer Hinge Boring Bits It features uniformly brazed carbideKey Features Uniformly brazed carbide inserts Precisely brazed tips deliver consistent contact and longer bit life compared to standard brazing methods. Self centering tips Engineered tip geometry provides accurate hole placement from the first strike, reducing walk and improving precision. Chromium nickel molybdenum steel alloy body Premium alloy construction ensures superior hammering quality and an extended service life under demanding jobsite