The Klein 70209 metric nut driver is designed for tightening and loosening bolts and nuts really fast. This handheld tool fits 9 mm that works for most applications. It also features an overall length of 6.625" which is perfect for circuit board and long bolt applications. The shaft comes in chrome finish for added resistance against corrosion. This nut driver is also certified by ASME / ANSI for meeting and exceeding applicable specification. Klein Tools is the world leader in the design and production of quality products. In cooperation with Klein Tools, we at PlumbersStock carry high-quality and reliable products for a very affordable price. Get yours now here at PlumbersStock.