Screw on tips
Screw-on tips are the latest invention in the PDR field, these tips, extensions and other accessories give the possibility to use a tool, PDR tools, hammers, knock-downs and other accessories that are made with a thread to accept these parts.
I that way it is possible to use just one tool for many different applications, just by changing the tip. That makes a tool kit modular an much more flexible, and limits greatly the amount of tools needed.