I've ordered these from 'cnc-solutions-uk' on ebay.co.uk and am very pleased with the items. It's always good to get parts from another hobbist that exceed your expectations.
A very useful addition to the stock frame if you are having flex issues with the supplied mounts using smaller motors or need a solid mount for a more powerful setup.
See my other video for a more complete review of the frame and it's parts.
Thanks for watching.