Looking more at those 2 products, they look very similar, 250C vs 550F, and the cheaper Maplin one says its suitable for just about everything (Machinery, fans, blowers, roller channels, chains, conveyors, bearings, gears, pneumatic tools, blades and bits, Trailer rollers, winches, turnbuckles, shackles, bearings, slides, motor pivot points and all external moving parts).
It looks like it should be suitable for the roller brakes I think, and its bigger and cheaper, hmm
John