These welding magnets are used as a to hold workpieces from the outside for inside welding. Compact size, designed with center hole for easy handling. metal, and has long service life. Widely used for brazing, soldering and welding applications. They can hold ferromagnetic metal firmly in position at 120°, 60° and 90° angles., Weight: 0.4299014109 Pounds, Manufacturer: Aboiled