When you want to fix a hard to close door, often you can shim things into position. These door shims are designed for 3.5" and 4" door hinges. They do not require the hinge screws to be completely removed, just loosened to fit the shim in place. Shims are 1mm thick, scale the Z axis to adjust the thickness to fit your needs (150% for 1.5mm shim, 200% for 2mm, etc.). Corners are radiused enough to fit basically any hinge with radii up to 5/8".