Multi-size Nut Kit:The screw-in nut kit includes 125pcs nuts,including 7 sizes,M4 10,M5 10,M6 10,M6 15,M8 15,M8 20,M10 25,could content most of your needs.There is also a storage box for sorting and storage,which can be quickly found when needed. Great Addition to Woodwork:When you need to transform some wooden furniture and preparing to add some feet to the newly bought cabinet,insert nut is godsend gift,can help you install the feet to the cabinet securely. Wide Applications:Excellent for replacing threaded insert nuts in places where the wood screw hole has broken down.Suitable for carpenters,repairmen,landlords to repair cabinets,floors,wooden toys,construction and other cork, fiberglass. Premium Materials:The hex socket screw inserts are made of zinc alloy,sturdy and durable,anti-oxidation and anti-corrosion,It can be used for a long time whether in high or cold conditions. Simple to Set Up:The hex socket screw-in nuts are fairly easy to set up,drill correct size hole in the place where you need to set,use a hex key to screw the screw-in nut into the hole.The external thread can hold the nut tightly and prevent it from loosening due to vibration.