to long-term use: These internally threaded star knobs are made of material and have good durability to you use it for a long time Provides a comfortable grip: The surface of the star knob is to a comfortable grip Great tool for daily replacement: These round-headed knobs are a great substitute for your broken knobs. Perfect for mechanical equipment: these clamping nuts with internal thread star gripping nuts contain 10 tool knobs. They are mainly used for mechanical equipment and can be used in machine tools. Exquisite appearance and beautiful shape: This M6 star knob has a farewell star shape design, which can you with a beautiful and generous appearance Applicable to: all types of machine tools Weight: 91 grams (approximately) colour:Black Material:Metal and plastic size:M6 x 25mm Package Contents: 10 x button handles Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.