Tennis Ball Glides for Walkers : pair of durable ball glides with inner stabilizer
Startop Deluxe Pre Cut Walker Tennis Ball Glides - Walkers Legs Universal Precut | eBay
Equate Walker Tennis Balls, 2 Count - Walmart.com
Amazon.com: AHS American Hospital Supply Tennis Balls for Walker Legs | Tennis Balls for Walkers for Seniors Complete Support & Surface Protection | Pair of 2 Precut (Blue) : Health & Household