Stanley 42-468 24 Inch High-Impact Abs Level Made from high impact ABS plastic, Won't dent like aluminum levels Non-marring material will not damage finished surfaces High-visibility yellow is easy to spot on the job site Convenient built-in measuring scale Top read center vial for easy readability An ideal professional grade high impact ABS level Non-marring material will not damage finished surfaces High-visibility yellow is easy to spot on the job site Convenient built-in measuring scale Limited lifetime warranty