diff --git a/src/models/graph.rs b/src/models/graph.rs
index 309d268..15e5b51 100644
--- a/src/models/graph.rs
+++ b/src/models/graph.rs
@@ -3,9 +3,9 @@ use typed_generational_arena::{Arena, Index};
 use crate::maps::{EdgeMap, VertexMap};
 use crate::traits::{GraphTopology, GraphTopologyDeletion, IncidenceCursor};
 
-type Vertex = Index<VertexIncidenceHeader, usize, usize>;
+pub type Vertex = Index<VertexIncidenceHeader, usize, usize>;
 
-type Edge = Index<IncidenceEntry, usize, usize>;
+pub type Edge = Index<IncidenceEntry, usize, usize>;
 
 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 struct VertexSlot(usize);