Includes sizes 6 to 22mm
Quality seems reasonable. It's certainly not Sidchrome or even Kinchrome, but for $20 you are laughing. You won't often need ratchet spanners, but when you do they are a godsend. They had 5-6 sets at my local Repco in Albion QLD.
With crappy ratchet spanners (like these), crack the nut first with a decent spanner, and use these to undo further.