Do I have my info right?

I’ve recently added a friction section to my website(a link is in my sig,) and I just wanted to check in with you guys and see if I’ve got all my information correct. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />
Also, if someone could answer a couple questions for me it’d be really helpful.
First of all, are friction mits typically disposable, or not?
And, how long do they last?

Thanks <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />