The Bosch web site said I should call if I wasn't sure whether their blade would fit in my tool. So I called. After about ten minutes on hold, I got the rep and asked my question: "Will your T-shank blades work in my Black and Decker handheld jigsaw?"
"I need the part or model number of the blade."
"I am interested in model T130DG."
"That is a T-shank blade. Does your saw take T-shank blades?"
"Yes, that is exactly what I am asking."
"Our blade will work in your saw, if your saw is compatible with T-shank blades."
Thanks, Bosch. I will decide to buy your blade, if your blade is something that I decide to buy.