- Sedra Dent Black clamp provide the operator with the best solution to use under microscope and incases of dental photography. - The highly polished clamp is made of superior type of stainless steel that resists many cycles of loading without fracture. - Black plasma is the latest generation of surface coating. It’s resulted from many procedures of heat treatment of the fine stainless steel, producing a surface with superior mechanical and surface properties and decreased light reflection to allow the operator to work comfortable under the high illumination sources of dental loupes and microscopes.