Designed specifically to fit angled furniture legs that dont have a swivel footing, the 6122 Flexi-Felt® model fits round tubing of 7/8 inch (22mm). Its patented design allows the entire felt to remain on the floor regardless of the chair leg angle, greatly increasing the durability of the felt and preventing the accumulation of dust under the felt. The product is guaranteed for 5 years.
For easy installation, coat the inside rim with diluted liquid soap ( 1 part soap to 20 parts water approx) and slip over the upturned chair leg. DO NOT USE GREASE OR OIL AS THIS WILL INVALIDATE THE GUARANTEE.
6100 series have a bulge partway down the tube. This bulge acts a bit like an elbow. For angled chair legs you put the chair leg part way into the 6122, then you place the felt bottom flat on the floor. After that you push the chair leg all the way to the bottom. This should result in the felt laying flat on the floor for even wear of the felt. These can be used for angled or vertical legs.
This is an excellent product. We've used it at our school for the past year and it stays on the leg, protects our marmoleum floor and deadens the noise of chairs moving in the classroom. I would highly recommend flexifelt.