Impex Systems #53102 75LB Tremor Pic Hanger OOK&reg; is the only company whose hooks have a reinforced elbow making the hook 20% stronger Blue Steel nails leave a pin size hole on wall surface and are re-usable For drywall and plaster wall surfaces Weight ratings are based on hangers nailed into studs and are for comparative purposes only. Choose a weight rating that greatly exceeds the object to be hung Hook holds up to 75 lbs. Pound ratings are not cumulative, one set of hangers will hold frames that weigh up to 75lbs