The Coburn Q392 lightweight lap tools have been designed to be as light as possible, while maintaining structural stability. Q392 laps are molded from an engineering plastic, which permits the lightweight design with maximum stiffness and stability. The selection of proprietary blended materials coupled with a design featuring a cavity and rib construction to reduce weight makes the Q392 lap special. Processing uncut 76-80 millimeter blanks with 2 ½ x 3” tools not only increases cycle times, but also increases rejects because of edge swirls that do not polish out. Eliminate this costly problem by using the 3 ½” Q392 lightweight lap tools.