Mixing Nozzle - Designed for the proper proportioning and mixing of different adhesive formulations. Use only appropriate Simpson Strong-Tie mixing nozzle in accordance to instructions. Modification or improper use of mixing nozzle may impair epoxy or acrylic performance. This 18-element mixing nozzle is for use with 22 oz. and 56 oz. Epoxy-Tie cartridges and the 30 oz. AT Acrylic-Tie adhesive cartridge. This is a 1-piece nozzle with integrated nut (separate retaining nut not required). - Size: 18 Element