THESE ARE OFF A 2014 HSBK R6 RACE BIKE. I CAN'T REMEMBER IT THEY ARE ATTACK OR SPIDER CLIPONS, BUT THEY DID COME FROM HSBK. THEY ARE 50MM FOR R6 AND R1 AND OTHERS. YOU NEED TO CHECK FITMENT YOURSELF. THEY HAVE A COUPLE LITTLE SCUFFS ON THEM BUT THEY WORK PERFECTLY.