A4988 Stepper Motor Driver Spacer.

This spacer was designed to fit an A4988 Stepper Motor Driver Module. The spacer is used to mount an A4988 Stepper Motor Driver Module on a PCB that is 32 mils thick. The spacer allows the pins to just barely stick through the PCB so they can be soldered easily.

The pins on the A4988 Module are around 220 mils long and the spacer is 115 mils thick.
The PCB is 32 mils thick. So, 220 - 115 - 32 = 73 mils. After mounting the A4988 module with spacer onto the PCB the pins will extend 73 mils