Pads: heatsink yellows in CNC backings Time used: a week Rim used: BMF Grind: light to medium Ceraminc: no Brake used: Magura What is your opinion of a working brake: bites instantly and holds How do they compare to previous pads you have used: well i used coustsinks so both pretty amazing Review: to begin with they were slipping quite alot and within a couple of days they bedded in and now theres a huge honk and instantly bites and will hold me pretty much everything i love these pads