Johnson Level, Tool J118 Aluminum Rule 18-Inch 1 Year Warranty: Johnson Level warrants this product against defects in material and workmanship for one year after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use. Durable 1-1/8" wide extruded aluminum rules Screened, thermal-bonded black graduations in 1/8" and 1/16" Bold, easy to read graduations and numbers Clear protective anodized finish