diff --git a/lib/mongo/repl_set_connection.rb b/lib/mongo/repl_set_connection.rb
index 7beab04..0a24e74 100644
--- a/lib/mongo/repl_set_connection.rb
+++ b/lib/mongo/repl_set_connection.rb
@@ -147,6 +147,11 @@ module Mongo
       setup(opts)
     end
 
+    def inspect
+      "<Mongo::ReplSetConnection:0x#{self.object_id.to_s(16)} @seeds=#{@seeds} " +
+        "@connected=#{@connected}>"
+    end
+
     # Initiate a connection to the replica set.
     def connect
       sync_synchronize(:EX) do
diff --git a/lib/mongo/util/node.rb b/lib/mongo/util/node.rb
index b13f5b5..fc7f3fd 100644
--- a/lib/mongo/util/node.rb
+++ b/lib/mongo/util/node.rb
@@ -1,7 +1,7 @@
 module Mongo
   class Node
 
-    attr_accessor :host, :port, :address, :config, :repl_set_status, :connection, :socket
+    attr_accessor :host, :port, :address, :config, :connection, :socket
 
     def initialize(connection, data)
       self.connection = connection
@@ -21,7 +21,11 @@ module Mongo
     alias :== :eql?
 
     def host_string
-      "#{@host}:#{@port}"
+      address
+    end
+
+    def inspect
+      "<Mongo::Node:0x#{self.object_id.to_s(16)} @host=#{@host} @port=#{@port}>"
     end
 
     # Create a connection to the provided node,
diff --git a/lib/mongo/util/pool_manager.rb b/lib/mongo/util/pool_manager.rb
index 36b0a7e..194d863 100644
--- a/lib/mongo/util/pool_manager.rb
+++ b/lib/mongo/util/pool_manager.rb
@@ -11,6 +11,10 @@ module Mongo
       @refresh_node = nil
     end
 
+    def inspect
+      "<Mongo::PoolManager:0x#{self.object_id.to_s(16)} @seeds=#{@seeds}>"
+    end
+
     def connect
       initialize_data
       members = connect_to_members