Open without pin.Versatile type.Easy-to-use size.2 pieces per pack.Adhesion of accessories and accessories.Adhesion of plastic model.Adhesion of metal model.Adhesion of ceramic figurines. What can be glued : Hard plastic, metal, synthetic rubber, ceramics, cardboard, etc. Things that cannot be glued : Polyethylene, polypropylene, fluororesin, nylon, silicone rubber, glass, styrofoam, etc.