Installation pictograms
4/5
Product seems to be perfectly good and certainly does "what it says on the tin"
Installation instructions are purely pictorial and the size of the diagram referencing the single rear foot wool benefit from a few words as to what it is trying ti illustrat, such as "Rotate the hexagonal red nut at the front of the chases to raise and lower the rear foot." The significance of the diagram was initially lost on me and could have saved some scraped knuckles trying to adjust by hand.