Core products distributed under the nationally known Grip-Rite and Pro-Twist brands include nails, screws, and collated fasteners; tools, compressors, and accessories; residential and commercial roofing products; diamond blades and accessories, gypsum accessories, weather protection and covers, adhesives and caulks, contractor bags and poly sheeting, building accessories; rebar and concrete accessories; and fencing and wire. Founded in 1938, PrimeSource is an international distributor of building materials serving residential, commercial, and industrial new-construction and remodeling markets as a value-added link in the distribution chain.