Knob Handles Are Made of High Quality Plastic. Solid Structure and Not Easy To Deform. Durability and Corrosion Resistant. Which Can Be Reused and Not Easily Lost. With A Star and Thread Design, The Surface Is Carefully Polished for A Comfortable Grip. The Surface Is Well Polished and Offers A Comfortable Touch Feeling. You Can Easily Fasten The Screw With Star-Shaped Nut By Hand. No Hand Slip. No Need for Other Tools. So You Can Repair Your Tools At Any Time. They Are Great Accessories. To Replace Your Old or Broken Knob Handles. for Securely Holding and Attaching Control Panels To Assemblies. Aggregates and Machines. Star Grip Is Ideal for Machine Tools. Factories. Machinery. Household Appliances. Food Industry and Pharmaceutical Industry Widely Used. Like Closets. Cabinets. Drawers Etc.