In a week or so's time, Aldi will be selling air compressors for the princely sum of GBP59.99. What I want to know is, is it worth buying? Will it be useful for anything more than pumping up the tyres on my push bike? What are the chances of being able to operate some decent tools off it, like a wrench or something? The spec is below. According to my calculations, 140 l/m is about 5 cfm, which according to Machine Mart's website should be enough to drive anything less than their 0.5" Extra Heavy Duty Impact Wrench, which is probably more than enough for working on a bike. Isn't it? Compressor and Accessories One-cylinder air compressor, complete with sixpiece accessory set. Easy to use, it features a directly coupled motor and built-in starter, relief pressure reducer, air intake filter and pressure switch, regulator gauge, self-stop quick coupling, drain valve and safety valve. The accessory kit comprises tyre pressure gauge, blow-out gun, air hose and three-piece adaptor set. * 230 volt * Speed 2850/min-1 * Operating pressure 8 bar * Air intake capacity 210 litres per min * Air output at 0 bar = 140 litres per min.