Wooden wedges are designed to slot into the inside corners of your canvas frame in order to create more tension in your stretched canvas. They are particularly useful if you have found that a canvas has slackened over time & want it to be taut without having to re-stretch the whole canvas.
You can use either four wedges per frame or eight depending on your preference; 1000 wedges would therefore be enough for either 250 frames or 125 frames, ideal for customers creating canvas frames regularly.