Jtek Brass Ping Bell fits Ahead Steerer Tube.

I recommend this product

Nice - had one on my touyring bike for years, just bought one for road bike. Does the job, solid.

I had this for about 6 months. Unfortunately it was always rattling loose on rides and required fettling to keep it in working order. Eventually the clapper fell off mid-ride on a canal path and I couldnt find it.
Now used, sans bell, as a 10mm stem spacer.

I recommend this product

Well made, with a good deep ring sound. Easy to fit, no tools needed other than standard Hx keys to remove stem, no v small keys needed.

I recommend this product

I really like this bell. It's an all metal construction, with what I think is a solid brass bell. The volume is just right, it gives off a nice cheery ring. But it doesn't give off false rings when travelling over rough surfaces either. The bell screws onto the spacer, so the angle of the pinger can be adjusted. To stop it coming undone, I put a small dab of contact adhesive on the thread.