Petal-shaped metal nuts: High-quality -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. structure: The petals nuts are made of high -quality stainless steel materials. They are 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 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 that your fixed devices and accessories are firm Multifunctional: petal nut can be used with 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