A new design that is simple, incredibly effective and comfortable. The twist in these combination wrenches allows for increased leverage and reduced hand fatigue. Forged from chrome vanadium steel for strength and durability. 12 point box-end design. The smooth chrome finish makes clean-up quick and easy. The seven piece sets come in standard or metric sizes: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16" and 3/4" or 10, 12, 13, 14, 15, 17 and 18mm. Wrench lengths span from 6 1/2" to 11" long. You'll love they way they feel in your hand!