Metal storage box included 15 Piece Standard Hex Key Set - Metric 3.4-lbs Weight Stanley J4988M Proto 15 Piece Hex Key Set - Metric Metal storage box included. 15 Piece Standard Hex Key Set - Metric 3.4-lbs Weight Proto 15 Piece Standard Hex Key Set - Metric Includes the following items: J46300, J46302, J46304, J46306, J46308, J46310, J46312, J46314, J46316, J46318, J46320, J46322, J46324, J46326, J46328.