Specification: 50ml, 1:1\/2:1, dual cartridge manual applicator gun, durable and firm PBT material, 100% high quality. Function: Designed for spreading or flowing various two-component adhesives or coatings , it can solve the unequal problems of two-component adhesive products. . Easy to use: The cartridge can be slid and held firmly in place with a lever, and squeezing the handles together can dispense mixed adhesives smoothly, easy to assemble and disassemble, suitable for manual use. . Suitable for: It is suitable for both 1:1 and 2:1 ratio cartridges and 50ml double barrel cartridges, and it can work with most major brands of glue and glue. other standard 50ml cartridges. . 100% Satisfied Service: Enjoy smooth and worry-free return service within one month. If you have any questions, dont hesitate to contact us, well be there for you. .