The product does not replace the same feeling of a original Miele handle. It saves you a fair bit, but the "saved" comes with poor quality and gives you the feeling of a product of way lower quality standard.
It does not has exact same measurement, and composition as the standard product. Furthermore, the construction is different from the original handle, so the moving parts are different from the original. With som sort of adjustment you may make it work.
Will it break or last in the long daily run - only time will tell.
Bartyspares are very good to inform about the track and traces of the delivery.
Summary: Cheaper product for cheaper money