Sparrow has created this bypass driver subtly titled the Adam Rite Bypass Driver. The driver replaces the actions of the cam on the back of a cylinder. often seen as keyways for the popular glass door locks. Once the adam rite bypass driver is in place all it needs is a turn of the driver and it will replace the action of the cylinder tailpiece by withdrawing the locks latch. This driver unlocks the deadlocking feature on the 4700 series of locks. And if the driver can continue to rotate the latch will fully open and the door unlocks. If the door happens to be in a partial bind, the driver releases the deadlock feature at which point you can use a shim or slim jim to slide behind the latch to push it back and open the door.
This driver for Adam Rites bypass tool does not need a tension wrench, this tool is strong enough to turn and open the lock because it is made of steel components that have been smoothed all held together with a permanent thermo plastic handle.
Sparrow Instructions for the Adam Rites bypass Tool - http://www.sparrowslockpicks.com/category_s/62.htm