[Angle Adjustment]: Adjustment range: 13–63 mm. Thread length: 50–100 mm. Suitable for different height requirements. 360-degree rotating ball joint. Tilt angle 15°–30°. Suitable for uneven surfaces. [Installation]: The plastic base of levelling feet provides wear-resistant and non-slip properties, providing stable and balanced support, which can reduce friction and noise when moving furniture, and will not damage or scratch the floor.