diff --git a/src/rntuple.cpp b/src/rntuple.cpp
index 658ad50..f93c696 100644
--- a/src/rntuple.cpp
+++ b/src/rntuple.cpp
@@ -124,6 +124,7 @@ void gather_ntuple_metadata(Arena *arena, RMicroFileReader &reader, const RNTupl
         assert(cluster_desc.GetId() <= UINT_MAX);
         pinfo->cluster_id = cluster_desc.GetId();
         pinfo->elem_type_name = push_str8f(arena, "%s", elem_type_name.c_str());
+        pinfo->bits_per_elem = col_descriptor.GetBitsOnStorage();
 
         Cluster_Info &cluster = clusters[pinfo->cluster_id];
         if (!cluster.first_page || pinfo->range.start < cluster.first_page->range.start) {
@@ -807,7 +808,8 @@ Sec_Hover_Info get_section_hover_info(Arena *arena, Section section, u64 off, co
   String8 sec_name = section_names[section.id];
   if (section.id == Sec_Page && section.info) {
     Page_Info_Node *pinfo = (Page_Info_Node *)section.info;
-    info.desc = push_str8_node(arena, nullptr, "%s [%s, n.elems: %d]", sec_name.c(), pinfo->elem_type_name.c(), abs(pinfo->n_elems));
+    info.desc = push_str8_node(arena, nullptr, "%s [%s, n.elems: %d (%u b)]", 
+                               sec_name.c(), pinfo->elem_type_name.c(), abs(pinfo->n_elems), pinfo->bits_per_elem);
   } else {
     info.desc = push_str8_node(arena, nullptr, "%s", sec_name.c());
   }
diff --git a/src/rntuple.h b/src/rntuple.h
index 5cf18b8..58306cc 100644
--- a/src/rntuple.h
+++ b/src/rntuple.h
@@ -18,6 +18,7 @@ struct Page_Info_Node {
   u32 cluster_id;
   b8 is_first_in_cluster;
 
+  u8 bits_per_elem;
   String8 elem_type_name;
 
   inline u64 checksum_size() const {