Simpson SDS-Max Quad Head Drill Bit 1-1/8 in. x 21 in. Carbide MDMX11221Q Profile Knives & Limiters reliable connection between the stair

reliable connection between the stair stringer and the carrying header or rim joist while replacing costly framing

Professional rotary hammer drilling with SDS-max shank rotary hammers

Member Size: Triple 2x6

Max RPM: 5800

Simpson SDS-Max Quad Head Drill Bit 1-1/8 in. x 21 in. Carbide MDMX11221Q Profile Knives & Limiters reliable connection between the stairKey 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