Simpson 9/16 in. x 21 in. SDS-Max 2-Cutter Head Carbide Drill Bit MDMX05621 Nailers Sold in a convenient pack

Sold in a convenient pack of 10

and (2) STN22 hex-head washers (sold separately)

What size header is the HH6 designed to support

Simpson Strong-Tie structural fasteners are engineered and extensively tested to efficiently meet your most demanding wood and metal applications

Simpson 9/16 in. x 21 in. SDS-Max 2-Cutter Head Carbide Drill Bit MDMX05621 Nailers Sold in a convenient packSimpson MDMX05621 9 16 in. x 21 in. SDS max Shank Drill Bit is a premium quality, professional grade 2 cutter head SDS max drill bit from Simpson Strong Tie, engineered for demanding concrete drilling and demolition applications. The proprietary flute geometry reduces vibration and optimizes impact energy transfer from the rotary hammer into the drill bit tip, delivering enhanced drilling speed and durability while reducing noise, stress, and