Parallettes are an awesome tool and can like Gymnastic rings transform your entire training. Learn here all you need to use parallettes for Calisthenics!
Often the question arises if rings or bars are better. But it often depends on the context which one is superior.
Give them a try and reap the benefits of these two instable buddies!
Equipment is there to get a job done and enhance the experience of your training. It should provide a new stimulus.