Model craft psd 6 piece screwdriver sets model craft psd1604 this nut 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 sizes32 x 75mm40 x 75mm50 x 75mm55 x 75mm60 x 75mm70 x 75mm model craft psd1604 6pce nut driver set