Size: 2.5cm, 3cm Color: Blue, Red, Black Material: Plastic Package Content: 2 x Barbell Bar Buckles - Robust Materials: Designed for a hole diameter of 25 mm / 30 mm, made of high-strength ABS plastic to withstand heavy weights and intensive training sessions. - Advanced Design: Spring-powered snap-latch mechanism ensures secure fastening, offering quicker and safer operation compared to traditional spring collars. - Durability: Features rubber inserts inside for a secure grip, preventing weight plates from loosening or slipping during use. - Easy to Use: Simple open and close function for quick attachment and reliable hold. - Compatibility: Suitable for barbell clamps used in weightlifting, powerlifting, gym workouts, fitness, CrossFit, weight training, strength training, and related exercises.