Park Tool Professional Race Stand - PRS-15 Clamping height quickly adjusts from 40 inch to 60 inch (102cm to 152cm) Oversized aluminum upright tube is elliptically-shaped and heat-treated to resist flexing Five-point leg system adjusts to create a super stable base on smooth or rough surfaces Shop quality 100-15X extreme range clamp quickly adjusts to fit tubes from 7/8 inch to 3 inch (24mm to 76mm) Clamp rotates 360 degrees for easy access to any part of bike