Manual Uncoupling Tool and Spring Pic
Walthers Part # 380-241,
A scale, 
 
Use for manually uncoupling Scale, Standard and #118 Shelf couplers. Blade end has a built-in spring pic.
 
For manual uncoupling the #118 SF shelf coupler the #241 has a pointed end to fit around the top shelf. The other blade end is for standard couplers, also, the blade end has nubs so it can double as a spring pick for inserting small coil springs.