STABLE DESIGN: Engineered with chrome pins and heavy plated steel, our 3x3 J-Cups provide rock-solid stability for your squat rack. Designed to fit 3x3 power racks, they ensure secure locking during barbell racking, offering peace of mind for intense workouts. BARBELL PROTECTION: Featuring a soft rubber lining, these J-Cups protect your barbell against scratches and damage when you're racking your weight, making them the ideal choice for J hooks 3x3, j cups for squat rack 3x3, and other power rack accessories.