| http://www.w3.org/ns/prov#value | - or expanded its inner diameter and to move the positioning member, in the cylinder member being fixed a bolt element; a screw screwed in the bolt element and having a tab mounted on a top portion thereof; a shaft member pivotally connecting with the screw, and the screw and the shaft member being insert into the cylinder member, the shaft member including a positioning slot to insert the positioni
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