Topeak PrepStand Race Clamp Head Accepts Quick-Release Fork 15 or 20 mm Thru-Axle Fork or Rear Dropout Clamp Height 80 cm to 163 cm (31.4-53.5) Folding Two QR Clamps Base HD Folding 6061 T6 Tubes Size (L x W x H) 22 x 20 x 95.5 cm / 8.7 x 7.9 x 37.6 (Folded) / 110 cm / 43.3 (Base Diameter)