<https://creativecoldsnow.com/product/masterpiece-stretcher-bar-a1-classic-27in-2/#product>
<http://schema.org/description>
"Classic Stretcher BarsMade from solid wood, these 11/16\" x 1-5/8\" stretcher bars offer an economical option for most stretched canvases, and are strong enough to support frames up to 60\" with bracing. The stretcher bar ends feature a special tongue and groove miter making it easy to assemble a frame without staples or glue. The unique joint design makes it possible to expand the frame and re-tension a loose canvas."
<https://creativecoldsnow.com/product/masterpiece-stretcher-bar-a1-classic-27in-2/>