bugfix

src/main/java/me/km/blocks/BlockGravelSlab.java

@@ -4,7 +4,6 @@ import java.util.Random;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
-import net.minecraft.block.SlabBlock;
 import net.minecraft.block.material.Material;
 import net.minecraft.entity.item.FallingBlockEntity;
 import net.minecraft.particles.BlockParticleData;
@@ -19,14 +18,9 @@ import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.common.ToolType;
 
-public class BlockGravelSlab extends SlabBlock {
+public class BlockGravelSlab extends BlockModSlab {
     public BlockGravelSlab(Properties properties) {
-        super(properties);
-    }
-
-    @Override
-    public boolean isToolEffective(BlockState state, ToolType tool) {
-        return tool == ToolType.SHOVEL;
+        super(properties, ToolType.SHOVEL);
     }
 
     @Override

src/main/java/me/km/blocks/BlockModSlab.java

@@ -16,9 +16,4 @@ public class BlockModSlab extends SlabBlock {
     public boolean isToolEffective(BlockState state, ToolType tool) {
         return this.tool == tool;
     }
-
-    @Override
-    public ToolType getHarvestTool(BlockState state) {
-        return ToolType.SHOVEL;
-    }
 }