This Made in Japan professional bonsai turntable features galvanized steel construction. Rubber turntable surface helps avoid slippage when working with a showcase quality tree. Tightening knob allows for varying degrees of tension. Galvanized wheel allows you to raise and lower the surface of the turntable from a height of 18" to 26". This Professional Bonsai Turntable is durable but not recommended for long exposure to the elements; long exposure to the elements will affect it over time. Galvanized Steel is resistant to water and rust but avoid prolonged continuous exposure to water. Turntable surface measures 15.5" in diameter and measures 18" in height when in lowest position. Professional bonsai turntable weighs 17lbs. Made in Japan.