I have a heavy tree topper that had been causing the top of my 7.5-ft. artificial tree to bend and lean. The Twist has completely fixed these issues, and the topper looks GREAT. I can't speak to how well the Twist supports tree toppers with different types of bases, but it works very well with mine specifically (see the diagram featuring only A in the item's pictures). I will say that the base of my topper was a bit too thin to fit snugly into the proper Twist extension, but this was easily remedied by wrapping the base with tape until its diameter was thick enough to be inserted into the Twist extension without wiggling around. Overall, this appears to be a very clever, well-made, quality product.