House Brand Dentistry Endodontic Reamers 21mm #35, Stainless Steel 6/Box. HSB - House Brand Dentistry's Reamers Stainless Steel, 400508 offers reliable and durable tools for endodontic procedures. Measuring 21mm and available in packs of 6, these high-quality stainless steel reamers are designed for shaping and enlarging root canals.Their rigid structure and efficient cutting edges ensure effective removal of dentin and debris, providing optimal canal preparation.