I had to put these into a bucket of hot soapy water to get rid of the horrible smelling oil that this product is coated with. It really stinks, gets on your hands and leaves you smelling a little like a mechanic. I assume the oil is there to protect against corrosion, a sealed polythene bag and some silica gel would have been far better.
As a dumbbell bar, these are OK, about 1kg a piece, nice and solid, however, you have to wind the collars really tight for the 30/45kg to stay put, 10/15kg seems not to be a problem.
The knurled grip soon takes a few layers of skin off your hands on heavy weights, unfortunately, there is no way to fit a grip guard, a pair of gardening gloves does the trick :)
This is a single bar with two collars, just to make that clear, some people seem to be expecting two bars.
Loses one star for hellish smell, another for the grip/self undoing collars.