David, I an attempt by my feeble mind to provide something perhaps useful, here's an image of an Old-Town-style mast step in case you want to make something that looks similar to what they provided. This is from the '30s, I believe. Length is 11 3/4", width is 2 1/16", and height is 1 3/4". Depth of the square mast hole is 3/4". I make no warranties- expressed or implied- about this mast step, its materials or construction, its finish or mode of attachment, or even the statements made herein.