Stanley Proto J47200 12 Piece 6 Point 1/4" Drive Metric Socket Set Set Includes: 4 mm, 5 mm, 5.5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, and 14 mm sockets Helps minimize fastener rounding and extends fastener life Turns worn, rounded and rusted fasteners more easily Engages to the fastener flats, not the corners Minimizes slippage