Model craft psd 6 piece screwdriver sets model craft psd1606 this hex key driver set from model craft has been manufactured to a high standard with nickel chrome molybdenum alloy steel the drivers are both easy and comfortable to use and can be used for a wide range of applicationsthe full set includes the following sizes09 x 50mm13 x 50mm 15 x 50mm20 x 50mm25 x 50mm30 x 50mm model craft psd1606 6 piece hex key driver set