Bike disc spacer Tektro Auriga

I've printed this hand-tool to replace the disk pads of my Tektro Auriga brakes.
It helps you to preset the pistons when replacing pads.
It expands the gap making it easy to insert the disk between the pads.
It works like a lever on the pistons, not on the pads. Consider to take some time to preset the pistons in original position.