Right-to-Left Support
The RadSplitButton fully supports right-to-left (RTL) language locales (Figure 1). In order to turn on the RTL support you should set dir=rtl to the html or body element or at least to its parent element (Figure 1). You can also use the direction:rtl CSS property.
<div dir="rtl">
<telerik:RadSplitButton runat="server" AutoPostBack="true" ID="RadSplitButton1" Skin="Silk" Text="Paste" CommandName="Paste">
<ContextMenu>
<Items>
<telerik:RadMenuItem Text="Paste plain" Value="PastePlain"></telerik:RadMenuItem>
<telerik:RadMenuItem Text="Paste as HTML" Value="PasteHtml"></telerik:RadMenuItem>
</Items>
</ContextMenu>
</telerik:RadSplitButton>
</div>