6 Sides/12 Points Sheet Clips: Crisscross side to side, can be clipped on at 12 points, and holds the sheets firmly in place. Easy to use: It is convenient to install and just fasten all 4 corners to the mattress with these flat sheet clips.able to secure the sheets on your mattress tightly without having to worry about them coming loose! Durable Clips: The clamp is made of chrome metal, which make it durable, colorfast and can prevent any rust. Use them to keep your sheets tight and crisp all night long for greater comfort and just an overall better sleeping experience. Professional adjustable design to fit for any kind of bed sheets both King Size, Queen Size, Hospital Beds, Inflatable Beds, Adjustable Beds, Waterbeds, Futons, RVs, and Hide-a Beds.