I designed these as upgrades to the Rescue Hero Replacement Arm I made.
Instead of re-inserting the original figure's hand, you can install the base Gadget Hand. The tools should all fit interchangeably with the plus on the base.
EDIT: I need to revise the files. The tools look fine in Solidworks, but the scale is WAY off for the size of the figure. The nozzles are ok, but I'm going to overhaul the lot of them.