We have just received a new batch of zebra connectors for HP41c. The compound chosen is more flexible than the previous one. The thickness has been optimized to avoid gaps in the lower part of the calculator, while keeping good pressure between both circuits when pressed together.
To do so, we have a central conductive part surrounded by two softer isolating silicone sides.
You can see it in the pictures beside.
In some cases (depending on you application and what the old zebras were) you may need or not the optional zebra holder.
The price for a pair has been lowered to 6€.