[PRE-CUT: It is convenient and safe to install. Just slip them on where you need to. HEAVY DUTY: Made from soft fiber and natural rubber which is heavy duty Universal Fit: 2.2 Inches cross cut can fit most of the walkers and Furniture Legs. USE: Great for Chairs Desks Stools Tables Walkers. PACKAGE: 4 Pack Precut Tennis Balls for Walkers]