This is the heat-free welding tool that uses a patented liquid polymer that reacts with UV light to form a bond in just four seconds. Ideal for any material, including metals, wood, glass, plastics, and ceramics, the pocket-sized pen tool has a 4-oz. replaceable liquid plastic cartridge that opens to reveal a needle-sized applicator. The non-conductive liquid material forms a durable, waterproof coating, making it ideal for insulating a frayed low-voltage wire (such as a laptop’s power cord), repairing a broken eyeglasses frame joint, plugging leaky pipe, or a host of other applications. The material cures when exposed to the built-in UV light. Unlike typical adhesives that dry out when exposed to air, the plastic remains liquid until exposed to UV light. Includes one liquid plastic refill cartridge. UV light uses a CR2302 battery that provides up to five hours of continuous use. Includes carrying case. Welding tool 5 1/2" L x 1/2" Diam. (1 oz.)