LAMY Replacement nibs Z108 POM round for LAMY AL-star EMR

I use Boox device and works perfectly!

Bought it to use with an Onyx Boox e-reader (Nova 3) on the LAMY pen.
The nibs are the "standard" round shape, the same as the one that came with my device, but a lot harder. On my screen (without a screen protector) they glide more than Onyx's nibs but it's still a good writing feel. Since they're harder they're great for tapping and using the stylus to control the tablet. They're also very durable, I started using the one that came with the pen 5 months ago and I still haven't had to change it.