The Beta 937 series of double-ended socket wrenches have a 12-point socket at each end of the L-shaped body. The socket on the end of the long leg is deep to accommodate a stud, and the short leg is open through the back to allow a access for a long stud. This also allows you to add a Tommy bar through the short leg to turn the L-wrench into a T-handle for greater leverage and extra torque. These high-polished chrome socket wrenches undergo a special heat treatment for increased surface hardness for industrial grade strength. This wrench has a deep 12mm hex (25mm deep) on the extended leg and a 12mm 12-point socket on the short leg.