Duplex just means double and simplex means single, so duplex must be stronger using that rationale
i dont know what exact steel used is but both the same if of the same quality ,one has one roller the other 2![]()
oi read the link, its a type of stainless![]()
you do it james I googled the type of steel , it was hard![]()
oi I asked u and u sed you didnt know , u lazy bastool![]()