Good replacement or upgrade over old Shimano Altus cantis, and easier to set up because of the threaded V-brake style pad! Complete with spring tensioners on both sides to dial them in.
This is one pair of brakes - if you're replacing both front and rear brakes on your bike, you'll need two sets.
Note: These work great on old MTBs but often don't fit most 70s to early 90s touring bikes because of boss spacing. If you're after the latter, your best bet is to find a vintage set of Shimano Deore or Deore XT cantis, or Dia-Compe DC980/3. Have yet to try the new DC980 with threaded pads on my Miyata 1000 but i'll report back. - dan