Material: Our chair caps are made of high-quality, non-slip plastic. They are abrasion-resistant, 100% non-toxic, durable, and resistant to deformation. Color: The black caps for garden chairs are easier to match with other furniture. Adding chair leg covers will enhance the look of your furniture. Size: The size of these replacement parts for garden furniture is 30 x 15 mm. Please confirm the size before purchasing. Protect your floor: These caps allow the furniture to slide easily while also protecting your floor from scratches and other damage. Easy to install: For easy installation, each tube insert comes with ribs that simply need to be aligned with the tube before being positioned. The ribs ensure a secure fit and eliminate the need for additional adhesives.