The GDM Impact Stamps are available in three models: Starter, Plain and Fullered. The Starter and Plain are designed to be used in combination, to maximise tool longevity. The Starter Stamp has a pyramid point and chamfered corners for less resistance when the initial part of the nail hole in made. To finish the nail hole, the Plain stamp is used to create a flat bottom and crisp finish in the nail hole for the pritchel. The Fullered Impact Stamp fits perfectly into the traditional fullering and rolled concave barstock and shoes. The handles are asymmetrical to ensure a comfortable grip. All GDM Impact Stamps are manufactured from the finest materials and undergo a hardening process to maximise performance and durability. The shanks are precision set to create the optimum nail fit.