Perfect for expandable tables with removable leaves. As you pull on one half, the other side moves away. Super easy one handed extension. Available in 28'' or 38'' lengths. The 28" slide can handle two 12" leaves, and the 38" model can handle three 12" leaves or two 18" leaves. Slides measure 3" wide by 2-3/8" high and have built-in rack and pinion assemblies. Sold in pairs.