Features & Benefits: 0.21? x 4.5? x 24-element (5.3 mm x 114.3 mm x 24-element) Bayonet mount For use with all 1:1 and 2:1 1.7 oz (50 ml) cartridgesADVANTAGES? VARIETY - Wide range of products for every job.? GUNS - Available in manual or pneumatic.? EFFICIENT - Mixing tips provide superior mixing and less waste. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.