A new Cat Pin Grabber Coupler for excavators is designed to meet or exceed global industry standards for coupler safety, including the European Union EN474 standard and the ISO/DIS-13031 "best practices" ruling. The coupler’s design has earned several patents, and more are pending. The new coupler will be the only coupler available for factory and retrofit installations and can be used for all Cat D, E and F Series excavators, models 311 through 390. The new coupler works with Cat buckets and most competitive buckets. Specialty designs include a narrow frame version to accommodate certain competitive buckets and a trencher version that fits within the width of the smallest trenching buckets.