diff --git a/spoolman/prometheus/metrics.py b/spoolman/prometheus/metrics.py
index d3e978978..3963c57fc 100644
--- a/spoolman/prometheus/metrics.py
+++ b/spoolman/prometheus/metrics.py
@@ -15,13 +15,18 @@
 PREFIX = "spoolman"
 
 SPOOL_PRICE = Gauge(f"{PREFIX}_spool_price", "Total Spool price", ["spool_id", "filament_id"])
-SPOOL_USED_WEIGHT = Gauge(f"{PREFIX}_spool_weight_used", "Spool Used Weight", ["spool_id", "filament_id"])
+SPOOL_USED_WEIGHT = Gauge(f"{PREFIX}_spool_weight_used", "Spool Used Weight in grams", ["spool_id", "filament_id"])
+SPOOL_INITIAL_WEIGHT = Gauge(
+    f"{PREFIX}_spool_initial_weight",
+    "Spool Net weight in grams",
+    ["spool_id", "filament_id"],
+)
 FILAMENT_INFO = Gauge(
     f"{PREFIX}_filament_info",
     "Filament information",
     ["filament_id", "vendor", "name", "material", "color"],
 )
-FILAMENT_DENSITY = Gauge(f"{PREFIX}_filament_density", "Density of filament", ["filament_id"])
+FILAMENT_DENSITY = Gauge(f"{PREFIX}_filament_density", "Density of filament gram/cm3", ["filament_id"])
 FILAMENT_DIAMETER = Gauge(f"{PREFIX}_filament_diameter", "Diameter of filament", ["filament_id"])
 FILAMENT_WEIGHT = Gauge(f"{PREFIX}_filament_weight", "Net weight of filament", ["filament_id"])
 
@@ -55,6 +60,8 @@ async def spool_metrics(db: AsyncSession) -> None:
     for row in result:
         if row.price is not None:
             SPOOL_PRICE.labels(str(row.id), str(row.filament_id)).set(row.price)
+        if row.initial_weight is not None:
+            SPOOL_INITIAL_WEIGHT.labels(str(row.id), str(row.filament_id)).set(row.initial_weight)
         SPOOL_USED_WEIGHT.labels(str(row.id), str(row.filament_id)).set(row.used_weight)