Simpson SDS-Max Quad Head Drill Bit 1-1/8 in. x 21 in. Carbide MDMX11221Q Multi Purpose The APL4 features ZMAX galvanization

The APL4 features ZMAX galvanization combined with a black powder coat finish

When a bit shows signs of wear

What size joist is the HUC68 designed to fit

The APGP1212 is specifically designed for a 12:12 pitch

Simpson SDS-Max Quad Head Drill Bit 1-1/8 in. x 21 in. Carbide MDMX11221Q Multi Purpose The APL4 features ZMAX galvanizationKey Features Uniformly Brazed Carbide Inserts: Delivers consistent bonding across all cutting edges, resulting in longer bit life and sustained cutting performance. Self Centering Tips: Ensures accurate hole placement from the very first strike, reducing the risk of bit walking on hard surfaces. Chromium Nickel Molybdenum Steel Alloy Body: A premium alloy construction that ensures exceptional hammering quality and an extended service life under heavy