Features: Engineered with premium alloy steel bits and chrome sockets, this effect extension rod delivers industrial grade durability and outstanding moment resistance for heavy duty applications. Features accuracy glass polished surfaces with antique bronze anti rust treatments and industrial knurling for enhanced grip, maintaining erosion resistance even in humid environments while preventing slippage. Ideal for professional mechanics, construction workers, and enthusiasts requiring stable tools for intensive automotive repairs or machinery maintenance tasks. Performs optimally in challenging environments including automotive workshops, production lines, and home garages where high moment fastener operations demand accuracy and tool longevity. The standardized 12.5mm interfaces with built in locking grooves ensures seamless compatibility with wrench adapters, available in multiple specifications to streamlines industrial workflows and equipment servicing. Specifications: Component: alloy steel interfaces: 12.5mm Length: about 10cm/4inch Type: multiple for option Package Includes: 1x Socket Bit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.