Prevalon® Heel Protector I Heel Protector Boot, 1 Case of 8 Masks With 4 Bars * Insert Style:Right Ear With 4 Bars * Insert adapter in rail receptacle allows for use with 7 8Ã or 1 diameter rails * Attractive brown vein finish * Constructed of 1 steel for strength and durability * Telescopes with movement of bed * Easily adjusts up or down with spring loaded release * Spring loaded crossbars are easy to intall and remove * Universal Cross brace bars can be used with most manufacturers bed rails * Limited Lifetime Warranty * Rails extend from 47´ 78 * Eliminates the need for gathering additional samples delivering total continuous pressure relief Helps to prevent heel ulcers by completely offloading the heel