Do you also find it really annoying when you have space left in your sample folder or the samples are not evenly spaced? Distance holders for binding screws M4 are the perfect solution to this problem.
Distance holders are also known as spacers. The plastic tubes are small tubes that are placed around the shaft of a binding screw to fill loose spaces. They are also used in sample folders to bridge gaps on the outside of the samples or to make the distance between the samples consistent.
The advantage of distance holders is that you can fill the inner spaces of binding screws at fixed intervals. There are different measurements so check how much space you need to fill from project to project. It also makes presentation folders look professional when there are gaps.