9", Contractor Magnetic Aluminum Torpedo Level, 3 Vial, 1 Piece, Full Length Oversized Cast Reinforced Aluminum Frame With Exclusive Computerized, Numerically Controlled Machined Edges, Large, Top V-Groove Accommodates Pipe & Conduit, Extra Strong, Full Length Magnetic Edge, 360 Degree Acrylic Yellow Barrel Vials, Surround View White Polymer Surrounds Vials For Easy Viewing, High Impact Plastic Covers, Level Vials Top Reading.