RadSlider for ASP.NET AJAX Version Q3 2008 released 11/25/2008 (release history)

Using the SmallChange property

Using the SmallChange property, you can create a "discrete" slider which will change its value in the defined steps. For example if you have a slider with range from 0-100 and SmallChange set to 5, the values which the slider can display are 0, 5, 10, 15, ... 95, 100. By default the value of this property is set to 1.