Amazon.com : 2 Strong Refillable Gym Chalk Balls, Each Climbing Chalk Ball Has 65 g (2.3 oz), Fine Soft for Athletic Chalk Ball Comes Full Good for Rock Climbing, Gym Workouts : Sports & Outdoors
Chalk Ball 2 x 40 g | Mammut
Harbinger Chalk Balls for Weightlifting, 2 Count - Walmart.com