Now this is why you buy this rather eccentric barbell, which is a recreation of some Soviet "screw on" bars from the 1980s:
The Power Lock sleeves....
...and the matching 2.5kg, IWF certified locking collars.
Which mount onto the barbell like this.
I haven't lifted with the bar yet (my first session with it will be tomorrow / Friday), but my first impressions is that this is an incredibly well made bar. I've owned and used Eleiko bars before, and they've all been great to use, but these one just has a certain sexiness and finish that goes beyond the norm, even for Eleiko.
I bought the bar for -$230 off the original list price (it may not be selling well), which means it's still a $750 barbell, so by no means a bargain. But considering you get the IWF collars ($170 separately), the cool Power Lock system, and what is otherwise a top of the line 20kg Eleiko training bar, it's a bit better value for money than your typical Eleiko bar, as long as you like the Power Lock feature.
I may not be able to recover or make gains as quickly as when I was younger, but having and adult income and nicer toys almost makes up for it...