The Klein 65722 is a 3-inch extension that is designed and used for areas that are hard to reach using a standard wrench. This extension features a 3/8-inch socket size, one of the commonly used socket sizes. It comes in chrome finish for added durability and resistance against corrosion. It is also made of high-quality alloy steel that can withstand extreme condition and will last for years to come. Klein Tools is the world leader in the design and production of the finest and high-quality products. In cooperation with Klein Tools, we at PlumbersStock carry high-quality and reliable products for a very affordable price. Grab yours now here at PlumbersStock.