These brake pads have a thread that
goes the full length of the post and are
tightened by a nut that goes onto the end
of this thread. They suit V brakes or
cantilever brakes requiring a threaded post.
They do not suit cantilever brakes where
the brake pad has a smooth post and is
attached to brake arm by tightening an
eye bolt against the side of the post.

My Tektro Oryx centre pull
cantilever brakes require
threaded pads but confusingly the post on the original pads is smooth for most
of its length and only has a thread on the
outermost part. Presumably these
may fit some non threaded eye bolt style cantilever brakes as well.

I have got these to work with a Tektro
Oryx central pull cantilever.

But the Oryx is I think different from other
cantilever brakes in that it allows threaded
pads similar to v brake pads to be used.
I think other cantilevers may need
a different type of pad.

Also, the radius of the pad is for 26 inch
and may not suit a 700c wheel.

I'd say check the brake manufacturers product
descriptions for what type of pad can
be used and see if they are a match.

My old shimano cantilevers required the pads to have an unthreaded post to mount them. These pads have a short threaded post. So depending on your cantilevers you could rule them out.

They fitted my Oryx cantilever brakes OK.

Depends on the mountings. I've got cantis, Avid Shortys, and these fit.