With four magnetic faces, one at 45°. Universal clamp. Mounts: 1/4" I/D lug, stem/spigot diameter: 1/8", 5/16" and 3/8". Base dimensions: 48 x 44 x 51mm. Column height x dia.: 175 x 12mm. Crossbar x dia.: 165 x 10.0mm. Clamp ring: 6.35mm. Magnetic pull: 30kg.