KleeSlabs

KleeSlabs lets you break just one half of a double slab, determined by the half you're looking at. It supports all vanilla slabs and slabs from many other mods, so you can remove the targeted half without breaking both.

Available for Forge, NeoForge and Fabric on Minecraft 1.12.2 - 26.3, KleeSlabs requires Balm to be installed alongside it.

Rent your own Minecraft server and install KleeSlabs with one click from the panel to make selective slab removal part of your shared builds.