(10) Pieces5/8" OD Round End Caps (14-20 Ga for 0.46" - 0.57" Inside Diameter) 0.625 Inch Round Head Sliding Inserts | Furniture Chair / Table Leg Caps | Fitness Equipment End Caps. plugs for round tubing features a series of tapered ribs which ensures a secure fit perfect for use on a wide range of metal furniture, appliances and similar items. Thick, impact and abrasion resistant base Ideal closures for products subject to heavy-duty service or exposure to adverse environments Durable construction and excellent gliding edges Not subject to rust or corrosion Material: Low-Density Polyethylene Service Temperature: -94 - 175° F (-70 - 79° C) Color: Black