This is a flexible TPU case for a CNC4PC Touch Probe with a 3/8" shaft. TPU is a rubber like material that will protect this sensitive probe from damage and dust when not in use. The two halves overlap on the edges to avoid sliding apart, but can additionally be held together with rubber bands or velcro straps if desired.

This great, inexpensive, yet highly accurate probe needs to be protected to last in a shop as it can easily be damaged and this case will do that well.