If you are looking for a threaded insert, then your research is over here. That's because our product can meet your need. Adopted of solid material, practical and for long time use, not easy to get deformed and bring you much convenience. Features -Color:Multi -Material:Carbon steel galvanized, stainless steel -Size:2.30X1.10X1.10cm/0.90X0.43X0.43in Inner diameter: 4mm Outer diameter: 8mm -The use of Carbon steel galvanized and stainless steel ensures that this nut insert is fit for marine environments. -The spiral thread design provides uniform force and prevents rotation, while the spreading effect ensures firm and adaptable installation. -This threaded insert has a wide range of applications, including fixing license plates, drying racks, air conditioners, pendants, and various iron sheets for hanging and adjusting things. -With excellent workmanship and a practical design, this petal nut expansion nut is stable and reliable, providing a great user experience. -This petal nut features a simple and convenient design that ensures long-lasting use. Package list: 20 x Hollow Door Anchors