Since 1974, Diversified Specialties, Inc. has produced standard and special quality Power Transmission Products for Industrial/ Mechanical Distributors and OEMs. We are an American manufacturer of Timing, HTD® and Poly Chain®. Our state of the art equipment allows us to manufacture a wide range of standard and special pulleys for V-Belts, Poly-V®, Micro-V®, Roller Chain Sprockets, and Spur Gears. Our production management staff has over 100 years of combined knowledge, which gives us the flexibility to meet customer demands whether you need one or 1,000 pieces. We proudly manufacture products to meet ANSI and Metric standards in the USA.