I like the one made by Radio South. It is a little pricey but is a neat unit.
If your engine is mounted upright or inverted the one your looking at should work fine. The one your looking at is sort of heavy and after it wears a little it may not stay on very well if your engine is mounted on its side. The ones that I have used are about worn out by the time the nicad quits taking a good charge[couple of years]. I would advise you to buy one with the meter in the cap and if the length is not necessary get the shortest [lightest] model of the brand you buy. The meter is handy to tell that the glow plug is working and the glow heater is still charged.
FEB