They do seem to stock everything here, and if you're after something basic like screws, mouse traps etc, their good. However, the shopkeeper doesn't seem to know much ABOUT what he sells - so best to check it is what you need before buying.
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686139 Adjustable Angle Grinder Wrench
Jaws adjust to fit most angle grinders.
Fully adjustable pin wrench from 15-52mm.
Stepped handle can be used as a spanner to undo nuts from 10-19mm.