A handle for holding shortened hacksaw blades for use in confined areas. 
Drawn specifically to cut the hole required to change the heater flap on a Peugeot 407.

The basic dimensions of the handle are similar to the generic cheap screwdrivers that come with phone repair parts. It fits in the hand fairly well and is a lot more comfortable than holding the hacksaw blade in your hand.

Used in this video

Printed from PETG for sufficient strength.