Round base magnet - 25-lb. pull. 1.42in. dia. x 265in. thick with 3/16in. hole. This magnetic base has a powerful ceramic ring magnet encased in a durable nickel plated cup with a mounting hole in the center. Attach a hook or knob to the magnet to hold inspection equipment or shop lights in place. It will hold 25 pounds. Highly resistant to heat. Under normal use, permanent magnetism guaranteed. NOTE: Pounds pull is rated by vertical test on 3/8in. thick ground steel plate. Pounds pull rating will be reduced if the item you wish to lift is thinner, painted, or an uneven surface. Pulling Power (lbs.): 25, Product Style: Holding magnet, Diameter (in.): 1 7/16, Thickness (in.): 1/4, Material: Ceramic ring encased in durable nickel-plated cup.