Wrench extender assembly in black do 1/2 inch drive switch rods or 21 mm drive Description: [Wrench extension cable do drive 1/2 inch or drive 21 mm] Adapter of the key extension cable is drive 1/2 inch or 21 mm. Great for professionals. [Material]: Universal key extender is made of carbon steel, reliable quality and. [Widely used] Adapter extending the wrench is ideal do repairing nuts and bolts. [Practical akcesoria]: The do key extension tool can help you save time and energy. Excellent do adding more do stubborn nuts and bolts and reaching do hard-to-reach places. [Easy to Use]: The key extension cord is designed to extend the za key with another key for more leverage. To change the tightening or loosening, simply place it on the opposite side of the wrench. Specification: Material: stal carbon Size Chart: 8 cm x 4,4 cm / 3,15 inch x 1,73 inch The package includes: 1 tool do key extension