Sorry, I thought that was a US quote but I suppose you use lbs. 50 years ago there was an ad that appeared regularly in the sort of mags teenage boys read, the tag line was sort of 'Do the other boys kick sand in your face on the beach? Are you a 7-stone weakling? Do you want to look like this (photo of Schwarzenegger-type)? Send money to me, Charles Atlas, and I'll change your life.'
A friend at school bought a similar device, a fibreglass pole, and spent months practising. At the end, there was one strange muscle that appeared on his forearm when he clenched his fist. We were not impressed.
Yes, I've read how easy a /2 is for some people. When I meet one, I'll investigate.
Charlie.