You can customize the size here:
https://app.cookiecad.com/?settings=%7B%22purchaseSize%22%3A3,%22cutterSize%22%3A76.2,%22sizeType%22%3A%22longest%22,%22interiorType%22%3A%22outline%22,%22imprintDepth%22%3A4.5,%22bladeDepth%22%3A%2213%22,%22bladeThickness%22%3A%220.5%22,%22extraBladeDepth%22%3A%2210%22,%22extraBladeThickness%22%3A%220.5%22,%22baseHeight%22%3A%223%22,%22baseWidth%22%3A%225%22,%22multiCutterRow%22%3A1,%22multiCutterColumn%22%3A1,%22multiCutterSpacing%22%3A-2,%22horizontalBarWidth%22%3A0,%22verticalBarWidth%22%3A0,%22units%22%3A%22inches%22,%22invertInterior%22%3Afalse,%22offsetIn%22%3Afalse,%22offsetInner%22%3A0,%22forceSolidBar%22%3Afalse,%22mirror%22%3Afalse,%22removeImprintBase%22%3Afalse,%22stampCutterTolerance%22%3A0.9,%22stampBackHeight%22%3A4.5,%22stampImprintHeight%22%3A3,%22deleteOuterPath%22%3Afalse,%22cutterSet%22%3Afalse,%22resolution%22%3A100,%22userSize%22%3A3,%22currentStlOutputFile%22%3A%228b5776dd89e24247b7018f24d91a4f44%2050W%20V8.stl%22,%22name%22%3A%22a-watercolor-style-vector-illustration-of-a-simple-sfiAXbqKQqadHp3e6qTe4A-f96OqIyBSL2P4gGarKuGVg%22%7D
The author marked this model as their own original creation.