√ Size: M3 M4 M5 M6 M8 M10 M12 total 180pcs in a box, meet your different needs. Allocating more quantity for the commonly used lock nuts.

√ Material: 304 Stainless Steel, strong and corrosion resistant, prevent bolts from being exposed and coming out providing better security and firm hold. Performs better compared to lock washers as it is made out of non-corrosive material.

√ Highly resistant against turning, preventing the lock nuts from weakening and loosening under vibration and torque which reduces the strength of hold. Guaranteed to stay intact and in firm hold making virtually indestructible.

√ Top Grade 304 stainless steel nylon lock nuts in 7 common sizes for general, convenient, and handy use making it highly ideal for use professionals and DIYers. This kit is one of the few in the market with high-quality and better quantity making it a cost-efficient choice.

√ Nylon Insert Lock Nuts are also known as stop nuts. Lock nuts are used for fastening to a bolt when mechanically joining materials together. The bolt threads into the nylon material are located at the top of the nut. The purpose of the nylon insert is to prevent backing off or loosening from vibration.