This is the UNIFORM INDUSTRIAL part number 5500-900113G, an accessory for the EA660 Series. It is a GUN GRIP, designed to enhance the usability and handling of compatible devices. This item has been replaced by part number 5500-900108G.
5500-900113G - Uniform Industrial UNITECH, ACCESSORY, EA660 SERIES, GUN GRIP, REPLACED BY 5500-900108G