The new metal GN514 series of push-push indexing plungers from Elesa provides the option of hand or foot operation where push-to-lock and push-to-disengage operation is a big advantage. Applications include rotating fireplaces or filing cabinets - tambas - where the operator may be required to reach some distance, or where a foot operation may simply be more convenient. This push-push arrangement provides a locking function in both extended and retracted positions.