Check the listing for details. Star Clamping Knobs, M10 x 25mm Thread 47.5mm Head, Thumb Screw Grip, 2-Pieces. Condition: New. Listed at 14.92 USD. Attributes:* Male Thread Size: M10 (1.5mm Pitch)* Threaded Stud Length: 25mm / 0.98"* Star Head Diameter: 47.5mm / 1.87"* Total Length: 55mm / 2.17"* 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.