3M Scotch-Weld EPX Plus II Mixing Square Nozzle Gold fits 1:1 50mL, 2:1 37mL and 3:2 43mL cartridges. 16 mixing elements. Tapered tip can be cut for bead size. 3.25" Long x 5/16" wide. General industrial, sporting goods, solar energy, wind energy, composites, electronics, military, transportation and aerospace. Bonding, joining, gluing, attaching, assembling, encapsulating, potting and sealing.