I’ll start by saying this product is great, easy to use, and it works! I’m giving 4 starts instead of 5 for two simple points:
1) I have externally routed cables and the support mechanism on the chain stay requires a bit more caution since it meets the frame right near one of the points where there are cable fasteners on the frame.
2) the part that supports and pulls back on my 105 rear derailleur doesn’t make the sturdiest contact with it. I use extra caution when extending chain lift as not to apply any sideways force to the derailleur as I’m scared it’ll bend or get damaged.
I share these for consideration in future design updates. I’m super happy with this product and it’s made my life so much easier when replacing my wheel between indoor trainer set and outdoor set, and when cleaning my drive train. Love it!