Sparrows Quick Shims
SPARROWS Quick Shims work in a similar method to the old credit card trick. These shims will open almost any knob, gate, or live spring latch including window catches.
Simply slide into door gap, find the front of the latch and push forward while you pull the door open. The set comes with 6 flexible shims in two thicknesses. The shims are oversized (6.5x4 inches) so that you can also cut and modify them for special applications
This set includes
6 x Over sized shims in two different thicknesses
1 x Case