Features M8 Thread Clamp Knob Black Plastic Hand Knob Star Shaped Knob for Machine Tool.Capacity Knob handles are made of high quality plastic for durability and long life. life.Star-shaped designGreat for comfortable grip, go with ergonomic design and play anti-slip effect without scratching your hands.ApplicationWidely used for mechanical equipment, instruments and appliances , food and industrial equipment.Package includes: 14 pieces 38 M8 star grip + 14 pieces of mechanical washers. Features: Material: plastic and metal Dimensions: shown in the picture. Package includes: 14 pieces 38 M8 star grip + 14 pieces of mechanical washers.Note:Not suitable for children under three years old.Manual measurement, please allow a little error.If you have any problems during the transaction or the use, please no contact us in time.