High Quality Materials: Made of 304 stainless steel and nylon, the nylon inserts are threaded to prevent loosening, one of the best forms of corrosion-resistant metals that lasts longer than other nuts on the market .Robust And Durable: The sturdy polymer nuts are extremely resistant to rotation. Lock nuts do not weaken or loosen under vibration or torque, reducing glow resistance. Guaranteed to stay intact and in a firm grip, making it virtually indestructible.Nut sizes: M3 M4 M5 M6 M6 M10 M12 to meet different needs. The nylon nuts are stored in a storage box, with which you can easily find the series and avoid loss if necessary.Wide Range D uses: Anti-lock nylon nut is a new type of anti-elastic anti-vibration parts used in, wardrobe, miner, trimmer, engine, textile machine, etc.Convenient storage: The nuts are stored in a storage box so that you can easily find them in the series and avoid loss if necessary.Number of pieces delivered: 1 set (175 pieces)45 pieces of M335 pieces of M430 pieces of M530 pieces of M6 15 pieces of M810 pieces of M105 pieces of M12