... up to the 400-540KG. Name: 490ml 10:1 Nylon Cauking Applicator, Sealant Caulking Gun, Dual Cartridge Gun Description: CG-490 ... are a manufacturer specializing in producing all kinds of caulking guns, air caulking gun, iron caulking gun, cartridges, static mixers, blowing ... us.Welcome to give us advice! 490ml 10:1 Nylon Cauking Applicator, Sealant Caulking Gun, Dual Cartridge Gun