Impression Tray, Orthodontia, Ni-Brass, M UPPER. ORTHODONTIA SIZE-M UPPER Impression Tray. This is the most popular pattern of the market. Made from qualify nickel-plated brass. It provides ideal dentulous impression. Product Code: D-TBO-03 • Exceptional Quality and Value priced hand instruments for dental, oral hygiene, surgical, veterinary, craft and hobby use. All products are made with the finest quality materials. • Our line of high quality dental instruments and precision tools are used in many applications including: Dentistry, Surgery, Veterinary , Scientific Laboratories, Forensic Lab, Industrial Companies, Crafts and by Hobbyists. • Choose from thousands of quality dental products from us. Send us an email if you have any questions about our products or have larger quantity or multiple items requirements.