hand tool box set : 1)8 in 1 set 2)10",12",14",16.5",18.5",21",23.5",26.5" 3)you can put 8 pcs in 1 biggest one hand tool box set: Its our best-seller,because small one can put inside bigger one,can save space, its really can appeal many buyers.The set has 8 different sizes of this series. MJ-01-10'',MJ-02-12",MJ-03-14",MJ-04-16.5", MJ-05-18.5',MJ-06-21"MJ-07-23.5",MJ-08-26.5"