Forged from the finest chrome molybdenum alloy steel – the best choice for strength and durability. Radius corner design - to extend the life of fasteners. The design drives the side of the fastener instead of the corner. 3/4-Inch drive. 21mm deep impact socket.
The Sunex 4 inch socket is a great investment for any industrial worker. Based on our own experience, this socket is incredibly strong and reliable, and even after many uses, it has yet to show any signs of wear and tear. It's also very affordable, making it a great addition to any toolbox. The only downside is that it's quite heavy, but that can be expected from a product of this caliber. Overall, a must-have for any industrial and scientific worker.
I ordered three 19, 21 and 35mm 3/4 drive sockets (all Sunex) to fill a set of heavy 3/4 drive sockets. on my two machines. All are just what I needed with no flaws and do the job I needed them for.
I bought this socket, 3/4" drive, impact socket, 21mm deep, for one job only, removing 3/4" drive wheel nuts. 24" long breaker. The lug nuts on my truck were torqued to 165 ft-lbs and using the combination above I was able to loosen the lug nuts with moderate force and I'm 60 years old.