●【T-Nut】The flange of the T-nut has nibs that dig wood crafts to ensure the bolt is tightened from the other side of the wood to provide better holding power ●【Galvanized Carbon Steel Material】These four T-nuts are made of carbon steel and are galvanized to prevent rust and corrosion ●【Application】These nuts are used for a strong, reliable and easy fit with threaded sockets in wood or chipboard ●【Convenient to Use】Tap these nuts to the appropriate size hole and the prongs will hold them in place ●【Four-Jaw Nuts】These four prongs stop rotating when the T-nut is inserted into a piece of wood and tightened