Kemper Pro-Line Tools are crafted from select hardwood handles. The steel loops and blades are made from "knife quality" high carbon steel that has been heat treated and quenched in oil to give the blades maximum hardness and durability. Because high carbon steel takes and holds a sharper and longer lasting edge than stainless, these tools last much longer even when used with highly groged clays and plaster.
The high carbon steel blades allows these tools to retain their edge many times longer than stainless steel blades; however, they will rust if not used regularly or cleaned after each use.
All of Kemper's Pro-Line Tools are retained by brass ferrules and firmly set with industrial adhesives to protect against water and prevent them from coming loose. In addition each handle is immersed in an oil resin bath to seal the handle against water damage and prolong the life of the tools.