Hu-Friedy's Debridement Curettes are used to smooth root surfaces and remove small residual deposits after ultrasonic scaling. They come in four sizes for different areas: SOH1/2 for buccal/lingual surfaces, SOH3/4 for mesial/distal surfaces, SOH5/6 for anterior teeth, and SOH7/8 which has an extended 15mm shank for deep pockets. The curettes have disk-shaped blades that can cut in all directions and extended shanks for access into deep periodontal pockets.