compression sleeve for wire rack the smaller racks like Metro Shelving from Lowes are sometimes missing a bag of these sleeves.Measured an original sleeve. I used Google Sketchup. Extruded a half circle(arc) up in length to match the length of the standard compression sleeve. I then tapered that outer edge by the resizing tool. in skethup/ Added a small lip at the bottom to engage the ridges on the shelf legs. One does NOT need the interlocking features of the original design,