DURABLE STAR HEAD - The plum head is made of high quality plastic, good toughness and impact resistance, and durable. RUST SCREWS - The screws are made of high quality iron, surface galvanized, high hardness, rust-proof, sturdy and durable. EASY TO USE - Large plastic knurled handle for comfortable grip, screw-on fully screw-on design for easy installation, removal and adjustment . WIDE APPLICATION - These thumbscrews are widely used for mechanical equipment, electronic equipment, communication equipment, hardware, furniture decoration and other related industries. PACK OF 10 - Each pack includes 10 M6*30mm thumbscrews. Thread Length: 30mm / 1.18inch; Thread diameter: M6, metric thread. Durable star head The plum head is made of high quality plastic, which has good toughness and impact resistance, and is durable.< /p> Anti-rust screws Screws are made of high quality iron, surface galvanized, high hardness, anti-rust, sturdy and durable. Easy to use Large plastic knurled handle for comfortable grip, fully screwed design for easy installation, removal and adjustment. Wide applications These thumbscrews are widely used for mechanical equipment, electronic equipment, communication equipment, hardware, furniture decoration and other related industries. 10-piece set Each package includes 10 x M6*30mm knurled head screws. Thread Length: 30mm / 1.18inch; Thread diameter: M6, metric thread.