The screws and threaded inserts are strong and corrosion-resistant. Threaded insert nuts are made of carbon steel. 30 Pcs M6 Threaded Inserts for Wood with Bolts Set: 15 Furniture Hex Socket Drive Screw-in Nuts(M6x 20mm) & 15 Furniture Screws Flat Head Hex Socket Bolts(M6x 25mm), for Wood Furniture,with 2 Wrench.
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