Innovative: connect dumbbells to a bar to perform barbell exercises with dualbell dumbbell adapters simplicity: quick and easy to use. quickly load dumbbells and easily slide dualbell onto your bar versatility: expand exercise options. enjoy presses, squats, deadlifts, landmine exercises and more strength & durability: strong and durable. use up to 100lb dumbbell in one dualbell bar compatibility: works with 1" (25mm) diameter standard bars, weight collars. (not for 2" olympic bars) dumbbell compatibility: fits most common dumbbell and adjustable dumbbell handles. see product description compact: space saving fitness equipment that stores easily on a shelf, in a closet or under furniture intuitive: rolls smoothly on the bar to stay under during exercise. interlocking spacers keep dumbbells aligned. what's included: 4 dualbells, 2 spacers, storage bag, workout chart made in the usa: each item is inspected and hand packed for shipping
