Check the listing for details. Star Clamping Knobs, M10 x 20mm Thread 48mm Head, Thumb Screw Grip, 2-Pieces. Condition: New. Listed at 14.97 USD. Attributes:* Male Thread Size: M10 (1.5mm Pitch)* Threaded Stud Length: 20mm / 0.79"* Star Head Diameter: 48mm / 1.89"* Total Length: 50mm / 1.97"* Material: Zinc Plated Carbon Steel, Thermoset Plastic* Color: Black, Silver ToneWhat Is Included:* 2 Pieces x Star Clamping KnobsApplications & Features:--- The star clamping knobs are designed to provide a secure grip and quick adjustment, suitable for a variety of industrial applications. Widely used in lathes, drill presses, sawing machines, milling machine fixtures, packaging machinery, printing equipment, woodworking machinery, mechanical equipment, instrument equipment, food and industrial equipment.--- The unique star-shap plastic knobs offer an ergonomic and comfortable grip, even with gloves, wet or greasy hands.