I found an interesting review at - http://www.universalcycles.com/shopping/product_de...
"There aren't a whole lot of all-metal folding pedals out there. Fewer still allow you to install any kind of toe clips or straps. It is possible, with a little bit of work, to pop out the reflectors on these pedals and finagle a pair of Power Grip Fixie Straps onto them.
The bearings don't seem very well-made. The first pair I bought had a defective bearing from the factory. Universal dealt with it very professionally and quickly got me a refund. With the replacement pair I have now, one pedal turns smoothly and easily but the other is starting to feel slightly gritty. This is after maybe three hundred miles.
I may be missing something, but I don't see a way to service the bearings.
I'm disappointed by the bearing problem but I don't see another option because my folding bike is a fixed-gear so I want some kind of foot retention but I want it to work with any shoes and want the pedals to fold.
Pros: Sturdy aluminum construction
At least some toe straps can be made to fit
Cons: The bearings seem to be poorly made or tensioned and do not seem to be serviceable"
It might be worth looking at.