1/4" Dr. 12 Point Metric Universal Impact Sockets Sizes includes: 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm and 15mm Magnetized to hold fasteners securely during installation and removal 12 point allows for easier use in confined work areas CR-MO alloy steel for long life