How are the workout bars secured to prevent them from coming apart?

Bars are held in place using two M12 screws which are screwed into the tubing from both ends.
A CNC-milled rotating component is welded into the tube to hold the M12 screws in place.

The contact surface between the rotator and the upright has been machined to create knurling, leading to increased frictional resistance between the two contact surfaces. This principle works very effectively and creates an effective, stable link between the workout bars.

Quick adjustment without tools: As a special option, we offer a quick adjustment solution, which consists of two M12 star-stud screws with a strong, plastic handle
This allows you to loosen the workout bar without using any tools for a quick height adjustment.