As time goes on, more and more shooters tend to experiment with progressively "weaker" tubes or bands and lighter ammo. There are several reasons for this, age, greater accuracy, comfort, ease of use etc.
I remember a while back buying double per side looped 1745's. That was a beginners mistake.
I'm about to try out 1632 as a way of further developing accuracy skills at short distances.
An observation
As an avid collector and shooter, I am very pleases to note that Chinese style slingshots are increasingly popular in the West.
It is also evident that Dankung is marketing more flat band cattys. The sport benefits greatly from this exchange of ideas and shooting styles.
I look forward to the time when Chinese and Western shooters meet in friendly competitions. Maybe Dankung can organize such an event in the near future.
You have two completely different products illustrated here under the same Model code.
Please correct the confusion.
Thank you