Height adjustment from 55-inches to 72-inches (1.4m to 1.8m) allow a comfortable working height for any mechanic even when clamping on the seat post of the bike. Quick-adjusting clamp that fits frame tubes from 7/8 (22mm) to 1 5/8 (41mm) diameter…. Infinite 360 degree rotation of clamp head Quality construction Tapered rotational locking system Folds easily for storage Constructed of heavy steel tubing & powder coated for durability Rubber feet are adjustable for uneven floors Leg stabilising system creats a solid base that resists tipping.