HOW TO FIT: Fits 1 7/8" round OD tube or pipe ( 1-7/8" OUTSIDE diameter) & can stretch up to 1/16” larger for a snug fit without tearing or splitting. 1 1/2" deep / tall to provide a secure fit. EASY TO INSTALL: The 1.875" snap in plugs serve as a long-lasting solution for many household or outdoor projects including replacements for fence/fencing railing posts, gate rail post covers, trailer frame ends, pole pipe rod caps. FLOORING PROTECTION: Prescott Plastics black ribbed plugs prevent scuffs on wood and other natural floors. They provide a protective “glide” for chair tips, bench feet, table legs, bar stools, patio furniture, and other furniture designed for furniture inserts and plugs. PREMIUM QUALITY PLUGS: Our plugs and inserts are designed to hold up in all harsh weather conditions and high traffic areas. MADE IN USA: These Plastic Plugs are specially designed and produced in USA to maintain quality, endurance and durability.