Check the listing for details. 2 Set Star Knobs M6 x 10mm Male + M6 Female Thread 38mm Head Handles, Black. Condition: New. Listed at 13.80 USD. These durable star knobs are constructed from high-strength plastic material to ensure long-lasting reliability. The carbon steel male threaded stud on the handle is zinc plated for reliable rust prevention; Brass metal screw-in female threaded insert on the handle offers high strength and corrosion resistance for long service life.Designed for tool-free operation, the star-profile knobs enable quick adjustment and secure tightening through intuitive hand rotation. The ergonomic star-shaped design provides smooth surface, comfortable and non-slip grip, and allows for precise manual control. The reinforced metal insert resists stripping across repeated use cycles. The through-hole female handles facilitates installation and allows for various installation methods.