Features: Premium mattress nonslip grippers crafted from high strength alloy prevents shifting on both metal and wooden bed frames, ensuring stable sleep environments for households with children or pets. Easy installation enables instants setup within seconds, featuring corrosions resistant alloy construction for long lasted durability across humid climates and frequent relocations. Ideal for renters, active families, and noise sensitive sleepers seeking perfect bedroom solution that accommodate diverse bed types and lifestyle changes. Secures mattresses during vigorously movements while eliminating squeaks, perfect for coastal home, pet friendly spaces, and apartments requiring quiet nighttime environments. Universals bed frame stabilizer seamlessly integrates with most modern furniture designs, delivering year round slip proof performances through reinforced grip technology and low profile aesthetics. Specifications: Component: Alloy Color: White, Black Size: A pictures shown. Package Includes: 4pcs Antislip Mattress Holders note: Please allow 1-3cm error due to manual measurement. please make sure you not mind before you bid. Due to the differences between different monitors, the picture may not reflect the item actual color.