38mm Gallery White Plastic Wedge x 1

Gallery 38mm Tension keys or otherwise known as Plastic wedges that are designed to slot into the inside corners of your canvas stretcher frame in order to create more tension within your finished stretched canvas. They are particularly useful if you have found that a canvas has slackened over time and needs tensioning again without having to re-stretch the full printed or painted canvas.sold individually x 1 plastic wedges - You can use either four wedges per frame or eight depending on your size canvas or preference.