High Quality - The screw is made of stainless steel material, these ball plungers are sturdy and .

5 Pieces - There are total 5 pieces of ball plungers in one set that you may use for many projects.

Better to Use - Easy to install and convenient to use.

Wide Applications - Widely applicable for mechanical devices, clamps, , automatic machines, etc.

More Improvement - They are great parts for providing pressure and accurate positioning.