Micro Swiss Heater Block Upgrade with Silicone Sock for CR10 / Ender 2 / Ender 3 / ANET A8 Printers MK7, MK8, MK9 Hotends

This fits the Gulf Coast Swiss hot-end clone, too.

How do you attach it to the heat sink without the two holes? The two holes used to attach to the heat sink are missing. I thought it would work by pressing it in firmly, but it came out on the first try. I liked the looks of it when I ordered and I ordered three. Am I going to have to return all of them?

Great replacement for Micro Swiss all metal hotend.