diff --git a/CryptoExchange.Net.UnitTests/TestImplementations/TestBaseClient.cs b/CryptoExchange.Net.UnitTests/TestImplementations/TestBaseClient.cs
index c696169..3fac0e9 100644
--- a/CryptoExchange.Net.UnitTests/TestImplementations/TestBaseClient.cs
+++ b/CryptoExchange.Net.UnitTests/TestImplementations/TestBaseClient.cs
@@ -54,6 +54,8 @@ namespace CryptoExchange.Net.UnitTests
             return deserializeResult;
         }
 
+        /// <inheritdoc />
+        public override string FormatSymbol(string baseAsset, string quoteAsset) => $"{baseAsset.ToUpperInvariant()}{quoteAsset.ToUpperInvariant()}";
         public override TimeSpan? GetTimeOffset() => null;
         public override TimeSyncInfo GetTimeSyncInfo() => null;
         protected override AuthenticationProvider CreateAuthenticationProvider(ApiCredentials credentials) => throw new NotImplementedException();
diff --git a/CryptoExchange.Net.UnitTests/TestImplementations/TestRestClient.cs b/CryptoExchange.Net.UnitTests/TestImplementations/TestRestClient.cs
index 1326abf..1ad9c9f 100644
--- a/CryptoExchange.Net.UnitTests/TestImplementations/TestRestClient.cs
+++ b/CryptoExchange.Net.UnitTests/TestImplementations/TestRestClient.cs
@@ -137,6 +137,9 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations
             RequestFactory = new Mock<IRequestFactory>().Object;
         }
 
+        /// <inheritdoc />
+        public override string FormatSymbol(string baseAsset, string quoteAsset) => $"{baseAsset.ToUpperInvariant()}{quoteAsset.ToUpperInvariant()}";
+
         public async Task<CallResult<T>> Request<T>(CancellationToken ct = default) where T : class
         {
             return await SendRequestAsync<T>(new Uri("http://www.test.com"), HttpMethod.Get, ct, requestWeight: 0);
@@ -178,6 +181,9 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations
             RequestFactory = new Mock<IRequestFactory>().Object;
         }
 
+        /// <inheritdoc />
+        public override string FormatSymbol(string baseAsset, string quoteAsset) => $"{baseAsset.ToUpperInvariant()}{quoteAsset.ToUpperInvariant()}";
+
         public async Task<CallResult<T>> Request<T>(CancellationToken ct = default) where T : class
         {
             return await SendRequestAsync<T>(new Uri("http://www.test.com"), HttpMethod.Get, ct, requestWeight: 0);
diff --git a/CryptoExchange.Net.UnitTests/TestImplementations/TestSocketClient.cs b/CryptoExchange.Net.UnitTests/TestImplementations/TestSocketClient.cs
index 1ab342c..1df4635 100644
--- a/CryptoExchange.Net.UnitTests/TestImplementations/TestSocketClient.cs
+++ b/CryptoExchange.Net.UnitTests/TestImplementations/TestSocketClient.cs
@@ -84,6 +84,9 @@ namespace CryptoExchange.Net.UnitTests.TestImplementations
 
         }
 
+        /// <inheritdoc />
+        public override string FormatSymbol(string baseAsset, string quoteAsset) => $"{baseAsset.ToUpperInvariant()}{quoteAsset.ToUpperInvariant()}";
+
         internal IWebsocket CreateSocketInternal(string address)
         {
             return CreateSocket(address);
diff --git a/CryptoExchange.Net/Clients/BaseApiClient.cs b/CryptoExchange.Net/Clients/BaseApiClient.cs
index 5f7113d..a377fbd 100644
--- a/CryptoExchange.Net/Clients/BaseApiClient.cs
+++ b/CryptoExchange.Net/Clients/BaseApiClient.cs
@@ -78,6 +78,9 @@ namespace CryptoExchange.Net.Clients
         /// <returns></returns>
         protected abstract AuthenticationProvider CreateAuthenticationProvider(ApiCredentials credentials);
 
+        /// <inheritdoc />
+        public abstract string FormatSymbol(string baseAsset, string quoteAsset);
+
         /// <inheritdoc />
         public void SetApiCredentials<T>(T credentials) where T : ApiCredentials
         {
diff --git a/CryptoExchange.Net/Interfaces/IBaseApiClient.cs b/CryptoExchange.Net/Interfaces/IBaseApiClient.cs
index fea84d5..88bbd73 100644
--- a/CryptoExchange.Net/Interfaces/IBaseApiClient.cs
+++ b/CryptoExchange.Net/Interfaces/IBaseApiClient.cs
@@ -12,6 +12,14 @@ namespace CryptoExchange.Net.Interfaces
         /// </summary>
         string BaseAddress { get; }
 
+        /// <summary>
+        /// Format a base and quote asset to an exchange accepted symbol 
+        /// </summary>
+        /// <param name="baseAsset">The base asset</param>
+        /// <param name="quoteAsset">The quote asset</param>
+        /// <returns></returns>
+        string FormatSymbol(string baseAsset, string quoteAsset);
+
         /// <summary>
         /// Set the API credentials for this API client
         /// </summary>
diff --git a/CryptoExchange.Net/Interfaces/IOrderBookFactory.cs b/CryptoExchange.Net/Interfaces/IOrderBookFactory.cs
new file mode 100644
index 0000000..2ffc9e3
--- /dev/null
+++ b/CryptoExchange.Net/Interfaces/IOrderBookFactory.cs
@@ -0,0 +1,27 @@
+using CryptoExchange.Net.Objects.Options;
+using System;
+
+namespace CryptoExchange.Net.Interfaces
+{
+    /// <summary>
+    /// Factory for ISymbolOrderBook instances
+    /// </summary>
+    public interface IOrderBookFactory<TOptions> where TOptions : OrderBookOptions
+    {
+        /// <summary>
+        /// Create a new order book by symbol name
+        /// </summary>
+        /// <param name="symbol">Symbol name</param>
+        /// <param name="options">Options for the order book</param>
+        /// <returns></returns>
+        public ISymbolOrderBook Create(string symbol, Action<TOptions>? options = null);
+        /// <summary>
+        /// Create a new order book by base and quote asset names
+        /// </summary>
+        /// <param name="baseAsset">Base asset name</param>
+        /// <param name="quoteAsset">Quote asset name</param>
+        /// <param name="options">Options for the order book</param>
+        /// <returns></returns>
+        public ISymbolOrderBook Create(string baseAsset, string quoteAsset, Action<TOptions>? options = null);
+    }
+}
diff --git a/CryptoExchange.Net/Objects/Options/OrderBookOptions.cs b/CryptoExchange.Net/Objects/Options/OrderBookOptions.cs
index 1e6b062..9bcc39d 100644
--- a/CryptoExchange.Net/Objects/Options/OrderBookOptions.cs
+++ b/CryptoExchange.Net/Objects/Options/OrderBookOptions.cs
@@ -3,7 +3,7 @@
     /// <summary>
     /// Base for order book options
     /// </summary>
-    public class OrderBookOptions : ExchangeOptions
+    public class OrderBookOptions
     {
         /// <summary>
         /// Whether or not checksum validation is enabled. Default is true, disabling will ignore checksum messages.
@@ -19,11 +19,7 @@
         {
             return new T
             {
-                ApiCredentials = ApiCredentials?.Copy(),
-                OutputOriginalData = OutputOriginalData,
                 ChecksumValidationEnabled = ChecksumValidationEnabled,
-                Proxy = Proxy,
-                RequestTimeout = RequestTimeout
             };
         }
     }
diff --git a/CryptoExchange.Net/OrderBook/OrderBookFactory.cs b/CryptoExchange.Net/OrderBook/OrderBookFactory.cs
new file mode 100644
index 0000000..279dddb
--- /dev/null
+++ b/CryptoExchange.Net/OrderBook/OrderBookFactory.cs
@@ -0,0 +1,30 @@
+using CryptoExchange.Net.Interfaces;
+using CryptoExchange.Net.Objects.Options;
+using System;
+
+namespace CryptoExchange.Net.OrderBook
+{
+    /// <inheritdoc />
+    public class OrderBookFactory<TOptions> : IOrderBookFactory<TOptions> where TOptions: OrderBookOptions
+    {
+        private readonly Func<string, Action<TOptions>?, ISymbolOrderBook> _symbolCtor;
+        private readonly Func<string, string, Action<TOptions>?, ISymbolOrderBook> _assetsCtor;
+
+        /// <summary>
+        /// ctor
+        /// </summary>
+        /// <param name="symbolCtor"></param>
+        /// <param name="assetsCtor"></param>
+        public OrderBookFactory(Func<string, Action<TOptions>?, ISymbolOrderBook> symbolCtor, Func<string, string, Action<TOptions>?, ISymbolOrderBook> assetsCtor)
+        {
+            _symbolCtor = symbolCtor;
+            _assetsCtor = assetsCtor;
+        }
+
+        /// <inheritdoc />
+        public ISymbolOrderBook Create(string symbol, Action<TOptions>? options = null) => _symbolCtor(symbol, options);
+
+        /// <inheritdoc />
+        public ISymbolOrderBook Create(string baseAsset, string quoteAsset, Action<TOptions>? options = null) => _assetsCtor(baseAsset, quoteAsset, options);
+    }
+}
diff --git a/CryptoExchange.Net/Sockets/CryptoExchangeWebSocketClient.cs b/CryptoExchange.Net/Sockets/CryptoExchangeWebSocketClient.cs
index 40c4f8d..6162317 100644
--- a/CryptoExchange.Net/Sockets/CryptoExchangeWebSocketClient.cs
+++ b/CryptoExchange.Net/Sockets/CryptoExchangeWebSocketClient.cs
@@ -729,7 +729,7 @@ namespace CryptoExchange.Net.Sockets
         public int Id { get; set; }
 
         /// <summary>
-        /// The request id
+        /// The request weight
         /// </summary>
         public int Weight { get; set; }