Christmas Gift Guide: GearWrench Locking Impact Extensions
They are sold in 18-, 24- and 33-inch-long sizes for 3/8 and ½ sockets.
Pull collar locking mechanism that holds sockets tight.
They are made from impact grade Chrome Moly Alloy.
They can be used with a pin and O-ring retention system.
This 24-inch long extension for ½ inch sockets retails for around $50
Go to gearwrench.com