These Teng Tools Hex keys with T handles each have a short arm and a long arm The short arm allows excellent leverage allowing easy tightening and loosening The long arm of the Hex key has a ball point head which allows a working angle of up to 30 degrees and therefore improves access The keys are manufactured from chrome vanadium steel for toughness and durability This 7 piece set of Teng Tools Hex keys comprises the following sizes 3 x 100mm Hex Keys 25 3 and 4mm 3 x 150mm Hex Keys 5 6 and 7mm 1 x 190mm Hex Key 8mm The keys are supplied in a handy storage tray