The witte maxxpro plus stainless steel range is designed for use with stainless steel fittings today many high quality products are made of stainless steel because of its durability and appearance products made of stainless steel require the use of stainless steel fasteners it is very important to use a stainless steel screwdriver when working with stainless steel screws otherwise extraneous rust pitting or corrosion can be caused witte werkzeuge maxxpro stainless screwdriver blades are