Established in 1952, Koshin Electric & Machinery Company Ltd., the parent company of Jepson power tools, has been on the leading edge of designing, manufacturing, and distributing a comprehensive line of power tools and related accessories, self drilling Screw Thread Rolling Screw. Our target market includes the rofessional, commercial and residential construction and woodworking industries. In the company's more than 50-year history, Koshin has has earned an industry-wide reputation for quality in manufacturing. With continued dedication and commitment to excellence, the power tools delivered to clients are highly satisfied and earned great reputation for both its designs and performances.