This is an amazing tool! It is adjustable to any finger size! Position fingertip no further than the Hexi base. The Hexi base is positioned on your finger pad, not your finger nail.
The designer of this tool, Missie, uses starch and this tool for basting English Paper Piecing. More uses for this amazing too are holding seams open while pressing, pushing small items into glue such as seed beads, it saves your fingernail polish from bubbling from the heat of the iron. Also you can flip the Hexi base to the top of your nail and use as a stiletto point for sewing at the machine!