Nut driver socket materials is CR-V
Nut driver sockets are available with different surface finished or use color ring to distinguish different sizes easily
Socket adapter and socket can be separated and use individually and able to make in 1/4’’dr, 3/8’’dr or 1/2’’dr.
Socket adapters can be used with power screwdriver or air screwdriver
Customized your own nut driver socket set is also welcome