Sizes include 1/4-inch Dr. at 50mm, 100mm, and 250mm; 3/8-inch Dr. at 75mm, 150mm, and 250mm; 1/2-inch Dr. at 50mm, 125mm, and 250mm. It comes in a foam storage tray for easy organization and protection. Crafted from high - quality Chrome Vanadium Steel, this set ensures durability and long - lasting performance.


How to use: First, pick the right extension bar according to the size of the socket and the job you need to do. Simply attach the extension bar to your socket wrench, then use it to reach bolts or nuts in hard - to - access places. Notice: Don't use the bars with too much force beyond their capacity, as it may cause damage. Always check the connection between the bar and the socket to make sure it's secure before use. Maintenance advice: After each use, wipe the bars clean with a dry cloth. If they get dirty or greasy, you can use a mild cleaner. Store them in the provided foam tray to prevent scratches and keep them organized.