Specification: Product Name: Screw Knob Thread Size: M6 x 35mm/0.23” x 1.37” (D*L) Head Diameter: 25mm/0.98” Material: Plastic, Carbon Steel Color: Black Package Content: 10 x Screw Knobs Specifications: M6 x 35mm thread (0.23 x 1.37 , D*L); 25mm (0.98 ) head diameter. Also known as a thumb screw or star knob. Construction: Plastic head offers toughness and resists aging. Corrosion-resistant screw for reliable use in various environments. Tool-Free Installation: Easily tighten or loosen by hand, no tools required for quick adjustments. Ergonomic Design: Features smooth lines and finger grips for comfortable and secure hand tightening. Ideal for situations needing fast, tool-free adjustments. Versatile Applications: Lathes, machinery, instruments, and other industrial equipment in manufacturing, engineering, and science. ASIN B0FGWKZLZF Brand NACX Color Black Model S616 Unit Count 10 Count Part Number S616 Manufacturer NACX Item Dimensions 2.76 x 0.63 x 3.94 inches Number of Pieces 10