Here's what Australia's premier Kettlebell Instructor, Phil Kourbatski, has to say about the old school barbells:
If increasing forearm strength and gripping power, muscle size and strength is your goal there is nothing else out there that can deliver so many benefits as the old school barbells and dumbbells without specifically training for it.
It gave me a never experienced before growth –inducing stimulus from just doing simple movements like curls, rows, clean & presses, dumbbell swings.
My forearms felt ready to explode and my grip strength noticeably improved in just few sessions.
I am hooked. Training with the old school barbells and dumbbells is huge fun, extremely effective and makes you feel like you are training with strong people of the past, which has always fascinated me.
Some of the other advantages of the old school barbells and dumbell