The Epoxy Applicator Device is a manual dispensing gun designed for 50ml dual-barrel epoxy cartridges. It works with both 1:1 and 2:1 ratio cartridges, including the CG 500-35 and Universal PRO Epoxy sold at CrystalNinja. Simply load the cartridge, attach a mixing tip, and squeeze the trigger for a perfectly measured, evenly mixed stream of epoxy. This tool takes the guesswork out of two-part epoxy mixing. No more eyeballing ratios or hand-stirring in cups. The device pushes both barrels at the correct rate so the mixing tip does the blending for you. Essential for anyone doing high-volume rhinestone work with epoxy, especially tumblers, helmets, shoes, and hard-surface crystallizing. Compatible with standard 50ml side-by-side epoxy cartridges. Durable, reusable construction. Mixing tips sold separately.