Anti-rust screws: Screws are made of Carbon Steel, surface galvanized, high hardness, rust-proof, sturdy and durable.
Features: Star head is made of high quality plastic, good toughness and impact resistance, and durable. Star Knob, Screw On, star grips are ideal for manual adjustments in mechanical engineering.
Easy to Use: Plastic knurled handle for comfortable grip, fully threaded screw on type design for easily installing, removing and adjusting.
Wide Application: These thumb screws are widely used for mechanical equipments, electronic equipment, communications equipment, instrument and apparatus, industry equipment, hardware, furniture decoration and other related industries.