Have been using these for the past 4 months, with average mileage of 20 miles a day during the winter months, normally brake blocks last 3 months over the winter with the rain, grit etc, yet there is still plenty of wear left in them.
I have tried many brake blocks, from the cheap to the expensive and have always been blighted by excessive squealing, despite how i tried to clean the rims, and ive tried all methods, and the rims are a good quality rim.
The anti squeal compound does at is suggests, stops this squeal. Though not forever, after 4 months, there is a slight, intermittent squeal starting to develop in the front pair, but for the use and length of time I have had squeal free, reliable breaking, Ive given 5 stars and would highly recommend these.