Sinus Membrane Lifting System, Santa. It is very effective and safe to use. The system delivers steady and reliable results in every application. It can be applied on any bone tissue, and at any incline and at any depth. The core of the system is A.I.drill, and it is designed such that it stops by itself when the drill touches the membrane of the upper jaw. • 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.