The Wedge-Lock screed series was the first introduced by Blaw-Knox, and this classic screed was meeting the performance needs of specialized markets. Simple and inexpensive to run, the Wedge-Lock models are fixed-width, vibratory screeds with one-piece, bolt-on, abrasion-resistant plates and multiple bolt-on extension options. Adjustments could be made on the fly for precise control of even the most tender mixes.