The knobs were for a Belling cooker (model uncertain). The small adapters were a good fit on the spindles but I had to shorten the long ones to get the right length. This isn't difficult with a junior hacksaw. The cut ends are a much tighter fit in the knobs than the original ones. If you're using the full length, you'll most likely want to glue them in, but don't rush in because ---.

This is the second batch of this kind of knob I've used and both have had the same problem: the assembled knobs don't all sit at the correct angle. After much swapping of adapters between knobs, I eventually found a combination that was good enough.