Excellent pivot set option when door weight stress on traditional door frame butt hinges is a concern Enables a doorway that pivots from a point on the floor under the door's center instead of from hinges on the side of a door frame Allows for an alternative to a traditional door when function, design, door weight, space, or style are the issue Weight: 455g each; supports door weights up to 250 lbs; the floor bears the full weight of the door rather than the door hinge Dimensions: Top Part 130mm x 25mm (5.12" x 1"), Bottom Part 105mm x 25mm (4.12" x 1") Hole Size: 6mm (0.23") Product details: 1. Function is similar to upper and lower shafts of a ground spring. Heavy-duty shafts are installed at the bottom and top of the door leaf, playing an important role in the opening and closing of the door. 2. Maximum opening angle is 90 degrees. Main technical parameters: 1. Acid salt spray test performed for 24 hours; surface corrosion resistance meets 10-level standard. 2. Applicable door thickness: 32–60mm; requires 5mm thick hidden recess; maximum door height: 1800–2800mm; maximum door width: 1500mm. 3. Maximum load capacity: 120kg. Product material: SUS304 stainless steel Surface treatment: Sand finish Product advantages: 1. The bearing under the rotating shaft uses steel ball contact, allowing smooth and silent operation; screw adjustment enables easy installation and maintenance. 2. When the door is closed, the hinge is not visible from either side, maintaining a clean and aesthetic appearance. Installation method and application: 1. Create hidden recesses at the top and bottom of the door leaf; secure the shafts using self-tapping screws. 2. Upper and lower components have different structures and must be installed separately. 3. Use a hex key to adjust the upper shaft screw so the shaft aligns with the upper door frame bushing. Refer to the manual for exact dimensions and installation instructions. 4. Suitable for bathroom doors.