Functional principle and technical design:
The barrels of propelling pencils made by German manufacturers contain predominantly recyclable plastics and metals. It is not customary to use PVC.
The thicker leads of most clutch pencils have the same composition as those of wood-cased pencils and colour pencils, but are somewhat shorter.
Special sharpeners have been developed for sharpening the leads of clutch pencils. Some pencil models are equipped with a small sharpener integrated in the push-button.