Simpson 13/16 in. x 21 in. SDS-Max Quad Head Carbide Drill Bit MDMX08121Q for Rotary Hammers CCTQM Column Cap "T" for GFCMU and Concrete Piers These nails have been tested

These nails have been tested and approved for use in many popular Simpson Strong-Tie connector products

making this screw especially well-suited for outdoor decking environments exposed to chlorides

Installation: Install with (10-14) 0

Diameter 3/8"

Simpson 13/16 in. x 21 in. SDS-Max Quad Head Carbide Drill Bit MDMX08121Q for Rotary Hammers CCTQM Column Cap "T" for GFCMU and Concrete Piers These nails have been testedThe Simpson MDMX08121Q 13 16 in. x 21 in. SDS max Shank Quad Head Drill Bit by Simpson Strong Tie is a premium quality, professional grade carbide drill bit engineered for demanding rotary hammer drilling applications in concrete and reinforced concrete. Built with a proprietary quad head dual cutter design and high volume double helix flute geometry, this bit delivers exceptional drilling speed, superior durability, and reduced operator vibration