Sunex 1831 14 -Piece 1/4-Inch Drive Deep Metric Magnetic Impact Socket Set CR-MO alloy steel for long life Sockets include a spring loaded magnet that retracts into the socket for extended bolt applications Heavy duty blow mold case Fully guaranteed Set includes: 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm,14mm and 15mm