Just voted Popular Mechanics Magazine Editor"s Choice Award for 2011! The one drawback to the ubiquitous and incredibly useful "sawhorse workbench" is that it almost always suffers from saddleback. But these nifty brackets from Rockler are an instant cure - just slip them onto the sawhorses and add two 2x4"s in any length you desire to create a strong, stable base. Or you can add a sheet of plywood as a top for a sturdy, portable assembly table or for job-site work tables. A simple tool with virtually limitless possibilities. Includes screws to secure brackets to 2 x 4s. Sized for use with 2x4 sawhorses. Steel. Patent pending.