Hangman's New Brick hanging clips are designed to easily and quickly attach to any (2 ¼”-2 ¾”) brick. The adjustable clamp locks in place to give you a solid hanging hook capable of holding up to 30 lbs. At least 1/8" of exposed brick is required, and 0.2" of clearance between bricks for the clamp to fit securely. No drilling holes required. No screws, no nails and no damage to your wall. Simply clamp it to the brick for a secure, discreet and strong hook on your wall.