Truss-type steel reinforcement "ladders" for 16" block walls. They are 10' long. There are 15 of them. The price is per piece, though I would make a better deal for someone who wanted to take them all. Retail price on these is about $4 each! Note that they could also be linked together vertically or horizontally to make bean, pea, or cucumber fences; trellises; or tomato cages.
Serious inquires only. If it is still posted, it is still available.
Search terms: concrete block, cinder block, masonry, retaining wall, truss