I concur with the other reviews. This is an amazingly effective piece of kit. Cut a lemon in half, place the cut side down in the cup, squeeze the handles and Bob's your uncle. Effortless juice extraction, and the skin, flesh and pips can be removed in one piece for discarding. No mess all over your hands, no mopping up of fleshy bits and seeds, and consequently so easy to clean afterwards.
This works with limes too - there is possibly no real need to get both this and the same brand of lime squeezer
unless the relative size were to make the specific lime squeezer more efficient with limes (at the time of writing I have one of the latter on order too so have not yet been able to make comparison). I was surprised by how much juice this device, with one simple squeeze, forced out of a fairly desiccated old lime which had been hanging around in the fruit basket for some while. Previously it would have been a major undertaking to get half that amount out.
The cup is just big enough to get smaller orange halves into too, though there is a tendency for a bit of juice to spray out of the sides. It doesn't seem to be quite so efficient with oranges in the amount of juice extracted. It's notable that some reviewers of the same brand of orange squeezer
say that that product is not very efficient, though for me it's not nearly so bad as those reviews imply. Given how effective this lemon squeezer is with lemons and limes, it may be a property of the oranges themselves rather than the equipment per se.
You'll wonder how you ever survived without this.