This is an excellent pivot set option for situations where the weight of traditional doors causes stress on standard door frame butt hinges. It allows the door to pivot from a point on the floor under the center of the door, rather than from hinges at the side of the frame. This provides a viable alternative to conventional doors, accommodating various functions, designs, weights, space, or styles. Weight: 455g each, suitable for doors weighing up to 250 lbs; the floor supports the full weight of the door instead of the hinges. Dimensions: - Top Part: 130mm x 25mm / 5.12" x 1" - Bottom Part: 105mm x 25mm / 4.12" x 1" - Hole Size: 6mm / 0.23" (as shown in the pictures) Product features: 1. Functions similarly to upper and lower shafts of ground springs, with heavy-duty shafts installed at the top and bottom of the door leaf to assist in opening and closing. 2. Maximum opening angle is 90 degrees. Main technical parameters: 1. The acid salt spray test lasts for 24 hours, achieving a surface corrosion resistance level of 10. 2. Applicable door thickness is 32-60mm, with hidden recesses of 5mm; maximum door height dimension is 1800-2800mm, and maximum door width is 1500mm. 3. Maximum load-bearing capacity is 120KG. Product material: SUS304 stainless steel. Surface treatment: sanded finish. Product advantages: 1. The bearing under the rotating shaft utilizes steel ball contact, allowing for silent and smooth operation; screw adjustment for installation and maintenance is also convenient. 2. When the door is closed, the hinge remains hidden from sight, maintaining the aesthetic appeal of the door leaf. Installation method and scope of application: 1. Create hidden recesses at the top and bottom of the installed door leaf, using self-tapping screws to secure the shaft onto the door. 2. The upper and lower product components feature different structures and must be installed separately. 3. Use a hexagonal key to adjust the upper shaft screw so it fits snugly into the upper door frame bushing. Refer to the manual for specific dimensions and installation guidelines. 4. Suitable for bathroom doors.