Two Adjustable Height Options: These table leg extenders offer 2 height settings at 3.5 inches and 5.0 inches allowing you to customize table or desk height for better ergonomics and comfort during work or daily use. Note: The accessories are located inside the rubber caps on the table legs. Please remove the accessories before proceeding with installation and securing the table Sturdy and Durable Construction: Made from heavy-duty iron with advanced metal treatment these risers resist rust bending and breaking providing reliable support and long-lasting performance for various furniture types Enhanced Stability and Floor Protection: Each extender includes a reinforcement bolt for secure attachment and non-slip rubber caps at the base to prevent sliding and protect floors from scratches and damage Easy Tool-Free Installation: Designed for quick setup these leg risers come pre-assembled and require no tools Simply adjust the height using the B-type locking pin and tighten the bolt for immediate use Versatile Compatibility: Suitable for straight bent and folding table legs up to 1.39 inches in diameter Ideal for folding tables desks bar stools and DIY furniture projects both indoors and outdoors Quality customer service: if you have any questions about our products, welcome to consult our customer service at any time, our customer service is online 24 hours a day, and will surely give you a satisfactory answer.