These used to be a good product, lasting me weeks on high hill terrain. NOT SO MUCH ANYMORE.As of Lately, these brakes wear unusually fast. A two block hill will take these brakes down to the plastic housing. Have tried from other distributors, with the same results. A 3 mile use under regular up and down streets reduced the pad 80%. I am unable to use my last years, K2 brakes andI have been a fan of their products for many years. I have informed K2skates company directly on this issue, and they said, maybe it was a bad batch. They don't seem to really know, and a solution was not offered. Sorry to say goodbye to K2 and hello Rollerblades to my reluctancy. K2 leaves me no choice but to seek out a competitors skate if I want to continue to skate hills with safety and confidence.