Applications. For securely holding and securing control panels to assemblies and machines. Widely used for instruments and apparatus, food and industrial equipment. Quality material. The button handles are made of high quality plastic and the surface is well polished for durability and long life. The star handles. The star shaped handle provides a pleasant grip, are ideal for manual adjustments in mechanical engineering. Kit of 12. There are total of 12 pieces of button handles in one set which you can use for many machine tools and to replace your old or broken button handles. 12pcs M8 Thread Tightening Knob Characteristics Beautiful surface finish for a pleasant grip. The screw-in design is for easy installation and the thumbscrew head for better grip. The button handles are made of high quality plastic for added durability and longevity. Ideal for replacing your old or broken button handles. M8 Thread: Universal fit and can be used for most machine tools. Widely used for