High-grade heat-treated steel to ensure the best torque, pull and shear performance Corrosion-resistant cobra-coat to maximize corrosion resistance High and low thread for an ease of installation and maximum holding power 3/16 in drill size, 1-1/4 in minimum embedment, 1700 lb shear strength Bonus: Drill bit included in 10 piece packs Corrosion resistant Cobra-Coat to maximize corrosion resistance High and low thread for an ease of installation and maximum holding power High grade heat treated steel to ensure the best torque, pull and shear performance Concrete screws hex head socket drive and drill bit included 1/4 inch by 2-1/4 inch High grade steel, corrosion resistant, high and low thread for ease of installation and maximum holding power. ACQ compatible.