the same ( AKA Avid L) , they look very nice, are light but have very tight tolerances and not much adjustability beyond the ability to change the angle of the arms - as per below pictures. I found these are not very tolerant of canti bosses/studs that aren't perfect for this type of self tensioning brake - plus its a very tight gap to get the brake shoes in between the arm and the rim - so much so that I ditched the Avid brake shoes and used some 105 shoes that have a shorter fastening bolt and less depth overall - you may find these brakes a 'mare' to install so watch some videos first before buying.
rear fitting
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wide angle configuration (note two hidden grub screws in body of the brake that allow adjustment of the arm angle):
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narrower 'compact' angle alternative:
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front fitting
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I ended up having to use the more 'compact' angle to gain a bit of clearance - this is done by removing two very small grub screws and pivoting the canti arm to its alternative position.