I have Tektro R320 Calliper brakes on my bike:
It's time for some new pads.
However, the ones on this appear to be all in one, bolt straight into the pad on the calliper.
If I look on wiggle, my usual online component supplier, there are lots of blocks for cartridges, or blocks like this:
But not so many options that look like what is in the Tektro OEM.
How do I know what I can fit? what's compatible?