This strong steel circle cutter will create holes in drywall for lighting, electrical work, pipes and anytime a round hole is needed. The 8-1/2 in. long calibrated steel shaft enables sharp, clean cuts up to 16 in. in diameter. A hardened steel cutting blade and center point remain sharp even after many uses. The simple turn of the top moves the shaft in a circle to score/cut the drywall for a clean finish. The top features ribbing to create a firm grip for the user when moving in a cirle. The shaft features measurements in both English and metric for versatility. Measuring increments of 1/4 in. and millimeters allow for precise circle measurements. The tool is Chrome plated for extended wear. Kraft Tool Co. has been an American manufacturer of quality hand tools for the concrete, masonry, asphalt, plaster, drywall and tile, floor covering, and leveling trades for over 35-years.