Thin Caulking Tool
thingiverse
For those harder to reach locations that a typical square one won't reach.
Download Model from thingiverse
With this file you will be able to print Thin Caulking Tool with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Thin Caulking Tool.