Weight: 20 g/0.7 oz. Flow box size: 55 x 26 x 20 mm/2.17 x 1.02 x 0.79 inches. Rosin perfect for all electrical and electronic repairs, greatly increases the efficiency of the welding process. Rosin flow can clean and prevent oxidation of metals, resulting in strong and durable mechanical and electrical connections with welding. This welding flow is ideal for use with all common welds and is widely used to promote welding., Manufacturer: Unknown