Telescoping back scratcher

This is a telescoping back scratcher with changeable heads, so far I created 4, my favorite is the large Claw. I went with a small design as my 3D printer is one of the smaller ones.

To Assemble
Assemble the rods smallest 1 to largest 5 and screw on the desired scratcher. Let me know if there are any improvements you think it may need.

Edit - Added a Plug to keep the end from falling through that was created by tom_metcalf, my thanks to him for improving the design.