<p>【Durable Star Button】: These star buttons are made of plastic and brass, not only sturdy to use, but non-conductive and lightweight. You can tighten or loosen it at any time. 【Canvas】Using these screw nuts on your mechanical projects can really give you a more comfortable grip. In addition, you can adjust your machine tools without scratches.【Brass internal thread】These tension knobs with brass internal thread fit compatible bolt threads very well. Holds firmly and does not slip.【Wide application】These star knobs are good for cupboards, drawers, doors, locks and boxes, tools, appliances and other furniture. Evil or devices that need to be adjusted frequently. Fits perfectly; Their various applications. Our star buttons are used in all areas of industry and life and are a good choice for you.【What you get】The pack contains 10 M8x40 star buttons, manufactured to strict specifications with the standardized metric System. They will get the job done! M6x40 Woman's Clamping Handle Threaded Nut, Push Buttons Tightening Star Shaped Handle Knob Black Plastic Screw for Mechanical Devices Knurled Nut To Tighten Knob at; Internal thread universally suitable for; various furniture or appliances.● The star keys help you cover and fasten the threads of the bolts/screws and on; Avoid scratches.【Specification】:-Matte materials: brass, plastic-Black color-Internal thread diameter: M6-Handle type: Shaped 6-pointed star &gt;-Mounting type: 6-point screw, to thread hole-Head diameter: 30mm-Thread diameter: 8mm- Length Thread Length: 40mm Package Includes:Buttons; 10PCS Star Shaped HandNotes:Please allow ±1mm deviation due to manual measurement, we sincerely thank you for your understanding about-We are very confident in this product and confident that you will enjoy it will be satisfied! Any questions or concerns, we will resolve any issues at any time. your satisfaction.</p>