(Lot of 100) 1" OD Round (14-20 Ga) Plastic Tubing Plugs 1 Inch End Caps. Inside ring measures 5/8" and with the flanges it measures 7/8". Top cap measures 1". Refer to last two photos. 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. The exterior ribs are designed to provide a sure grip inside a tube · Durable construction and excellent gliding edges. Not subject to rust or corrosion. Made with High Grade Low-Density Polyethylene. · For Fencing Posts, Furniture End Caps, Fitness Equipment End Caps · Flexible ridges snugly hold these plugs in place. · For Unthreaded Surface Type with Straight Profile · Maximum Temperature 150 ' F. · Hardness: Durometer 50D. Maximum Temperature 150 F · Select the size that matches the tubing outside measurement Positively Angled locking rib design allows these plugs to fit most inside diameters