Silverline Spark Plug Gap Tool 0.5 - 2.55mm / 0.02 - 0.1" (202148)

I bought this for my husband. It's a cracking little tool and can be used often with what he does. He loved it and also loved the fact it can be put on a keyring and carried everywhere without inconvenience

I'm not sure I'd consider this a precision tool but its certainly accurate enough.I keep it handy more for double checking spark plug gaps than setting them.The winning features being its small and difficult to damage.

I recently had the need to gap some spark plugs and used feeler gauges like I always do. I then discovered there is a designated spark plug gapping tool and for the low cost thought i'd give it a go. To test it, I checked it against the plug that I recently gapped with the feeler gauge and it was bang on the exact same measurement. So, not only is the tool accurate, but it makes the job of gapping spark plugs less trial and error and a bit of a time saver. There's no going back now. A very hand addition to the toolbox.

Saved a lot of money by buying and fitting spark plugs myself in a 6 cylinder. Great little tool, easy to use.

I got this to check some pre-gapped spark plugs and it worked quite well, very handy to have in the tool box for checking gaps on plugs etc. feels sturdy and well made as expected from Silverline.

May be ok for convenience, but I think I prefer feeler gauges for accuracy, especially considering the amount of work required to access and remove the plugs on most modern motorcycles.

Works well & does what it’s supposed to. Good value.

This is a useful tool - forget feeler gauges, this is easier and quicker to check a gap on a plug. I have feeler gauges but this is better as the feeler gauges are far more delicate and easier to damage or loose some of them in the bottom of a toolbox. This is more robust, easier and quicker to use. It is cheap too. Manufacturing quality is adequate rather than very good hence 4 stars. Recommended.