Lower Abdomen and Extremity Positioning System: Radiation Oncology Easy positioning and precise repositioning KneeSTEP in combination with elevation block Mounted sliding bed adjusted with FeetSTEP 17 different indexed longitudinal adjustment positions (1.5 cm steps) 10 different indexed angular adjustment positions (in 5 steps) ** Please reference item #220509-0352-09 when contacting us about this listing. Return Policy Items are sold as-is as described and pictured. Most items come with a 7 day option to return and a 30 day limited parts warranty. Feel free to call before you buy. 888-649-6497