Low rating because due to the broken box, only part of the goods arrived on delivery. The original packaging was very thin cardboard (think of the really soft stuff that was sandwiched between the glass or ceramic plates to soften them up in transit) and couldn't handle a 58 pound load. Eventually it failed, and what was left the transport company put in another, slightly less flimsy box. The only parts of the product that made it to my house were the red bases - the black bushing adjusters got