Feature:1. Made of selected steel materials, strong and durable, has a long service life.2. Suitable for magnetic drill, radial drill, bench drill, lathe, vertical drill drilling equipment, etc.3. Simple operation and quick punching, with stable connection and good performance during use.4. The inner diameter is 19.05mm, great workmanship, perfect replacement for the old one.5. External cooling is required when drilling, and can be watered with an external cold water nozzle or a can.Specification:Item Type: Magnetic Drill Annular Cutter ArborModel: MTR8Color: SilverMaterial: SteelInner Diameter: Approx. 19.05mm / 0.8inExternal Cooling Fixture: External cooling is required when drilling (external cooling nozzle or can can be used for watering, equipment without a kettle is preferred)Application: Magnetic drill, radial drill, bench drill, lathe, vertical drill drilling equipment, etc..Package List:1 x Ring Arbor1 x Wrench