Dura-Green Stones are excellent for fast contouring and finishing. Dura-Green Fine Stones are ideal for surface characterization and adjusting details. Fracture-resistant: The stones are designed to withstand fracture and breakage, which makes them durable and reliable for dental procedures. High cutting efficiency: Shofu Dura Green Stones FG has a high cutting efficiency that allows for precise and smooth cutting of tooth structure and restorative materials. Versatile: These stones can be used for a variety of dental procedures, including crown and bridge preparation, shaping, contouring, and finishing. Easy identification: The stones are color-coded for easy identification, which simplifies the selection process during dental procedures. FG shank: The stones have an FG (friction grip) shank, which is a standard size used in most dental handpieces, making them compatible with a wide range of dental instruments.