Founded in 1992 MABIS DMI healthcare has been fostering innovation teamwork and a customer driven philosophy we continually evolve to support your needs in a competitive and ever changing marketplace. With over 5 000 products for the professional consumer and specialty markets we are dedicated to providing you with all your needs in the healthcare industry. Walkerballs are pre-cut - meaning they are easy to install and ready to use!. Meant to be used on the rear legs of walkers with front wheels. Smooth tennis ball style construction protects floors against scuff marks while gliding smoothly across most surfaces. One pair per package .