Petal-shaped metal nuts: High-quality M4-20, M5-25, M6-25 kg of top nuts are made of high-quality carbon steel. Its anti-rust resistance performance is enhanced by galvanized technology. Rust. Durable structure: The petals nuts are made of high -quality stainless steel materials. They are durable and can withstand the harsh use of frequent use. The swelling head of the nut can be firmly fixed on the board, which has good carrying capacity. Easy to install: The thread insert design of the petals nut to make it easy to install. Even in thin walls or soft walls, no dedicated tools or equipment is required Safe installation: The expansion anchor can provide safe and reliable installation solutions to ensure that your fixed devices and accessories are firm Multifunctional: petal nut can be used with various materials, including plastic, plywood, hollow walls, iron skin, etc., making it a multifunctional additive Colour:silver Material:Metal Package Contents: 90 x expansion screw petal nut Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.