RadSlider's properties - LargeChange and
SmallChange allow you to define the amount of value that will be used as a
step-size. Setting LargeChange, for example, will control how much the thumb
will travel when the track is clicked.
<telerik:RadSlider LargeChange="2" Maximum="10" />
SmallChange on the other hand is used when RadSlider
has its handles visible. Clicking any of the handles will increase/decrease the value by the amount
specified in SmallChange.
<telerik:RadSlider SmallChange="1" HandlesVisibility="Visible" Maximum="10" />
The same applies for the thumbs when the RadSlider is in selection range mode.