Material: metal Size: 16*16*14cm 2pcs， Equipped with 8 screws, only one screwdriver is needed to tighten the corners of the mattress This is a simple and efficient prevention of mattress movement stopper, we specifically designed and produced for the bed frame factory Made of flat and thick metal, not easy to deformation, the surface anti-oxidation treatment, strong and durable Can be used for your home, vacation home, RV and other bed frame of various sizes, to determine the size before purchase, and whether it is suitable for screw installation can be Humanized Design - the bar bracket is designed with L Corner Shape, easy to install, retain mattress on its platform, for keeping the mattress from sliding. Perfect solution for a sliding Mattress, no more having to adjust my mattress daily. work with most mattresses, ensuring a tight fit. Works on platform beds with a wooden frame, such as split king beds, platform beds, RV mattress, box springs, camper mattress. for home, vacation home. Before purchasing, please check the size and whether it is suitable for mounting with screws. Extra Tall Mattress Corner Retainer Bar Bracket 2Pcs Keeping Mattress from Sliding for Wood Platform Beds,Mattress,Mattress Mattress Slide Stopper Mattress Rails Mattress Retainer Bar 2PCSBlack, Non Slip, Metal, Adult,,Mattress Mattress Slide Stopper Mattress Rails Material: metal Size: 16*16*14cm 2pcs， Equipped with 8 screws, only one screwdriver is needed to tighten the corners of the mattress This is a simple and efficient prevention of mattress movement stopper, we specifically designed and produced for the bed frame factory Made of flat and thick metal, not easy to deformation, the surface anti-oxidation treatment, strong and durable Can be used for your home, vacation home, RV and other bed frame of various sizes, to determine the size before purchase, and whether it is suitable for screw installation can be Humanized Design - the bar bracket is designed with L Corner Shape, easy to install, retain mattress on its platform, for keeping the mattress from sliding. Perfect solution for a sliding Mattress, no more having to adjust my mattress daily. work with most mattresses, ensuring a tight fit. Works on platform beds with a wooden frame, such as split king beds, platform beds, RV mattress, box springs, camper mattress. for home, vacation home. Before purchasing, please check the size and whether it is suitable for mounting with screws. Extra Tall Mattress Corner Retainer Bar Bracket 2Pcs Keeping Mattress from Sliding for Wood Platform Beds,Mattress,Mattress Mattress Slide Stopper Mattress Rails