This screwdriver set is go-through set, and it has a strong handel. The shafts can be made in CRV or CS materials, but the price is differents. Our company is in the line of handtools, screwdrivers and tool sets, hope you to came to our company's website to have a look. The handtool can be used in everywhere, if you like this kind of the handtools, please contact me with free. By the way, this handtools can be made in black tips or stain finished. The handle is made in PP passed ROHS.