For 26 years, Yellow Jacket Inc.™, a division of Peterson Systems International located in Duarte, California, is the developer and manufacturer of the original modular cable protectors for use around the world. Yellow Jacket cable protection products range from light-duty DO Lite cable protector to the highly innovative WASP® AMS® (Advanced Modular System) ADA compatible (wheelchair accessible) cable ramp system. American-made, polyurethane Yellow Jackets are cast-molded for 100% solidity and are the best value on the market. For more information, visit us at http://www.yjams.com.