Help prevent slipping and accidental floor scuffs using these plastic caps. The rib design makes them easy to snap on to bar stools, patio furniture, gate rail posts, trailer frame end posts, pipe rods, and more, ideal for meal tubing, fence, fence railing posts. They're designed for hole dimensions of approximately 1/2 inch to 11/16 inches (inside dimensions) with a wall thickness of 0.042 - 0.125 inches. Each of the plastic end caps for square tubing measures 0.75 x 0.6 inches. You'll receive 100 rectangular plastic hole plugs in total.