7 Pc Cushion Grip Nut Driver Set, 3 16 in, 1 4 in, 5 16 in, 11 32 in, 3 8 in, 7 16 in, 1 2 in ORS NASCO and cafeterias and cafeterias New inhalation valve with each cartridge change Easy snap in mount eliminates mis threading and mis aligning General purpose selection of the most frequently used nut drivers Full hollow shafts facilitate work on long bolt applications Cushion grip handles allow for greater torque and comfort Internal flanges provide solid twist resistant shaft anchor Tip Ident® quickly identifies nut driver hex orientation and size by color coding the handle ends so you can easily engage the nut driver with the fastener