Chem-Set PAK-50 is the flagship double-barrel applicator gun for 50ml cartridges and easy coverts from 1:1, 2:1. It works with all standard 'square-back' 50ml adhesive cartridges. And specifically, cartridges from Chem-Set Lord, Loctite, Araldite, Devcon, 3M, and many others. The dispenser is extremely important to the adhesive dispensing process. A 2-component adhesive can only reach its full potential if constant metering of the correct ratio is ensured. The Chem-Set PAK-50 Gun double-barrel dispenser is a precision tool that is suited for industrial, professional and DIY use and is very user-friendly.