Bought to adapt my Thule roofbars to accommodate my Thule bike carrier. Although the roofbars and carrier is second hand - they are genuine Thule items. Basically the adapted bolts were too wide (24mm) to slot up inside the roof bar channel (19mm). Had to buff them down to fit.
Can’t see where i went wrong as this part description 889-3 is as per Thule’s own website???