The set includes 1/4″ hex shank adapters for 1/4″, 3/8″, and 1/2″ square drive sockets, plus a 1/4″ hex converter. Compact, easy to use, and convenient for toolboxes or vehicle repair kits. 🔧 Universal Impact Adapter Kit: 1/4″ hex shank socket adapter setw orks with impact drivers, electric drills, cordless drills, screwdriver handles, and quick release bit holders.