Acor Pads, you can find em on ebay. I ran em' for ages on a dead grind and they were amzing, just brought another set for the front and they just lock. Not much bite but amazing hold. My friend (Oldspice) just got some earlier and he runs em on a smooth rim on rear and they are really bitey and tones of hold I get em from my local bike shop £8, search for em on ebay and they will come up