IRWIN® levels are designed for every trade and environment, from magnetic levels for hands-free operation in steel framing to extendable levels for high ceilings, picture windows, and cabinetry. For construction trades, select from I-beam or box levels, heavy-duty, vibration-resistant mason levels or torpedo levels for cramped plumbing and electrical tasks. For low-light areas, there are box beam levels with LED lighted vials.