Answer :
Technician B says a box-end wrench provides the best grip on a hex head fastener is a correct statement.
What is an open-end wrench?
An open-end wrench is known to be a type of wrench that has two flat sides which are known to be very important in gripping of the flat sides of square head or a hex – head nuts.
Conclusively, The best advantage of Box-ended wrenches is that the wrench is fully closed on both ends and as such technician B is correct.
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