PRODUCT APPLICATIONSThese female star knobs are good for various applications requiring quick adjustments, such as woodworking, machinery, equipment assembly, lathes, drill presses, sawing machines, packaging, printing equipment, computer monitors, light fixtures, and patio umbrella brackets, etc.PRODUCT DETAILS INCLUDE Color: White Material: Plastic, Brass Thread Type: Female Thread Blind Hole Thread Size: 1/4"-20 Head Width: 25 mm/ 0.98 inch Total Height: 12 mm/ 0.47 inch Package Includes: 6Pcs x Star Head Screw Clamping KnobsPRODUCT ADVANTAGES1. Made of well plastic and brass, the star clamping knob offers good strength and durability. It is corrosion-resistant, heat-resistant, and insulated, ensuring a long service life for reliable performance.2. These hexagon head knobs feature a star shape design and ergonomic design with a smooth surface for a comfortable grip, and internally brass threaded inserts making them easy to hold and operate in a variety of settings.ATTENTIONThis female threaded knob is effortless to install and remove without requiring any special tools for installation. Simply screw on the handle for replacement. Avoid over-tightening the knob to prevent potential damage or stripping of threads in the mating assembly.