As Northern California’s leading independent distributor, California Service Tool (CST) provides the most comprehensive offer ... ing of tools, rental and repair services, seismic and fastening solutions, safety equipment and general construction supplies in our region. The knowledgeable tool and safety experts at our nine regional locations have the specialized experience and know-how to meet your jobsite requirements and exceed your customer service expectations. As a family business with 50 years of experience serving all commercial trades and MRO professionals, CST has always been guided by a commitment to champion our customers’ business success. read more