A pair of ProSourceFit barbell collar locks in blue. These clamps secure weight plates to barbells, ensuring safety during workouts. Designed for quick and easy application and removal. Measurements: • Inner Diameter: Approximately 1 inch Type: Olympic Collar Sport/Activity: Weight Lifting, Gym & Training Material: Plastic Features: Without Plates Department: Unisex Adults Country of Origin: China Unit Type: Unit Keywords: barbell, weightlifting, gym, fitness, workout, collars, locks, strength training, exercise, equipment, plate clamps, weight plates