Square column main body made of 304 brushed stainless steel, thick elastic black rubber buffer block on top with layered square cover, pre-drilled mounting holes at bottom for floor installation. Floor mounted to prevent door from fully leaning against wall, rubber layer absorbs closing impact to avoid paint peeling on door and wall. Square shape matches minimalist and industrial decoration styles, waterproof and corrosion resistant stainless steel fits bedroom, bathroom and commercial store doors.