Rugged and Durable: Strong, tempered chrome vanadium steel with black oxide finish resists corrosionMetric and Imperial Sizes: Machine milled head with laser-etched SAE and Metric scale provides a quick and convenient way to determine fastener size in either SAE or metricHigh Quality Tool: Perfectly parallel jaws and high quality alloy construction make this wrench set one of the most durable and versatile tools in your kitComfortable Handle: This professional adjustable wrench set is designed to exceed US and ANSI standards, is the perfect combination of comfort and efficiencyExpandable: Adjustable spud wrench has a retractable that allows it to be adjusted in length as needed, which makes it suitable for nuts and bolts of different sizes