Simpson 7/8 in. x 21 in. SDS-Max Quad-Head Carbide Drill Bit MDMX08721Q Metal Screws with a beam width of

with a beam width of 4-1/2 in

Its value-engineered design delivers exceptional carrying capacity at an economical price

Made in the USA: Manufactured in the United States to the highest quality standards

and what does it protect against

Simpson 7/8 in. x 21 in. SDS-Max Quad-Head Carbide Drill Bit MDMX08721Q Metal Screws with a beam width ofKey Features Uniformly Brazed Carbide Inserts: Uniformly brazed carbide inserts resulting in longer bit life. Self Centering Tips: Self centering tips for accurate hole placement. Chromium Nickel Molybdenum Steel Alloy Body: Chromium nickel molybdenum steel alloy body ensures hammering quality and extended service life. Heat Treatment & Shot Peened Finish: Heat treatment procedures and shot peened finish increase surface hardness, drilling speed,