DIMENSION - 6 x 2.5 x 1 inch, MATERIAL – Zinc alloy embryo + aluminum alloy core | EASY INSTALLATION - Three-dimensional adjustable range: vertical ± 3.0mm, horizontal ± 2.0mm and depth ± 1.0mm, do not have to remove the door can be adjusted | APPLICABLE DOOR SIZE - Door Thickness > 35mm, Door Width < 850mm | Three-dimensional adjustable range: up and down ± 3.0mm, left and right ± 2.0mm, before and after ± 1.0mm, do not have to remove the door can be adjusted | Finger protection due to small gap between door and frame.