A total of 13 models. G represents the diameter of the product. Scope of use: industrial laboratory/ Disposable Industrial Lab Supplies/Examples of industrial use: Black glue paint alcohol water silicone glue silver paste ink yellow glue silicone lubricating oil solder paste damping oil SMT red glue UV glue quick-drying glue crystal glue glass glue cooling paste horn glue anti-wear glue screw glue flux marking paint chemical reagent epoxy resin electrolysis Hydraulic hydraulic oil and soon