A resilient metal clip is suitable for use in securing adjacent panels of a knock-down structure, for example a collapsible container, to one another. The resilient clip includes two legs that extend away from one another, the two legs being resiliently connected to one another at one end in order for the legs to be resiliently displaceable relative to one another. Each leg has a free end, with the free ends terminating in panel engagement formations. A disengagement member is displaceably connected to one of the legs, and is displaceable relative to the leg between a rest position in which it does not interfere with an engagement formation provided on the leg, and a release position in which at least part of the disengagement member exerts a release force on the engagement formation of the leg.