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Adjustable spanner
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<p>An adjustable spanner (UK and most other Anglophone countries), also called a shifting spanner (Australia and New Zealand) or adjustable wrench (US and Canada), is any of various styles of <a href="/facts/Wrench/DWaIh3DW">spanner (wrench)</a> with a movable jaw, allowing it to be used with different sizes of <a href="/facts/Fastener/earBwoS6">fastener</a> head (<a href="/facts/Nut_(hardware)/RvmcvYH8">nut</a>, <a href="/facts/Screw/Rr0k38TC">bolt</a>, etc.) rather than just one fastener size, as with a conventional fixed spanner. </p>