Kramer-Nevins Sinus Lift Instrument (IMP6577SC-5) for acute angles with SMALLER Spoon blades width on one side compared to IMP6577SC . Spoon Blades width (4 mm/5 mm). The acute design will facilitate access to the mesial, distal, superior or inferior aspect. Designed to further separate the sinus lining from the bone, without fraying or tearing. IMP6577SC-5 • 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.