Turning tool fixtures are parts such as screws, levers, stop rings, etc. used in turning tools for cutting work pieces. Fixing of inserts and attachment of parts can be performed with screws or clamp screws used for turning tool bits, etc. By pressing the lever with the screw, the insert is securely fixed. To prevent shaking, secure a security deposit or presser under the tool bit. To securely fix the screw to the turning tool, it is necessary to use a spanner that matches the screw that secures the work clamp. Also, a torque wrench or spanner may be required depending on the type of screw. For clamp-type turning tools, insert and remove wrenches are suitable because they are used with a wrench when inserting inserts. The deposit is made of durable carbide or cermet.