1.Using aluminum alloy knighthead which can evade stumbling block on wall surface, easily to be assembled.

2.Upper sliding holder replaces normal upper rail to avoid height block hence enlarging space.

3.Wall clamp is adjustable with soft plastic strip sticking to wall and revise the wall incline error.

4.Adopt V-shape rail design.

5.Stainless steel wheel, antirust, solid and durable.

6.Bottom waterproof plastic strip sticks to floor to avoid any leakage.