Since the beginning of 2013, Iran Patek factories have started their activities in the field of hand tools, which include several units of design, mold making, tool making, forging (hot forging), machining, welding, pressing, electroplating, and blacksmithing. , heat treatment. One of the marking tools is mandrels, and usually mandrels are named according to their use, and they come in different types such as letter mandrels, number mandrels, and mandrels. space maker, marking mandrel, remover mandrel, etc. are produced, of course, the mandrels are not only for marking and have other capabilities such as aligning two holes, setting rivets in their place, removing rivets. And they also have screws. Mandrel holder LK 9910 Iran Patek is a type of mandrel holder for hammering letters and is suitable for holding manual mandrels, which makes the marking process easy and prevents the hammer from hitting the user’s hand. It is also equipped with a spring mechanism that makes it easy to install and maintain the mandrel, and it has a solid aluminum body that, due to the cross-sectional area of 19 × 19 mm and height of 170 mm, it has a relatively low weight of 450 grams.