Interphasic coil spanner
An interphasic coil spanner was a type of coil spanner commonly used by engineers during the 24th century.

After spending twenty subjective years in an Argrathi prison, Miles O'Brien worked with Jake Sisko in retraining his engineering skills, so as to not embarrass himself in front of the repair crews, by reviewing various engineering tools in the cargo bay. Among the tools he recognized include an interphasic coil spanner, an ODN recoupler, and with a bit more difficulty, a quantum flux regulator, Mark III. ()

See also 
 Interphase

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Engineering tools