APPLICATION: This universal parts holder can be used to hold a wide range of parts, including screws, nuts, bolts, jewelry and other small components - typically, during assembly, repair, or maintenance tasks MATERIAL: This vise made of aluminum and the 8 pins are stainless steel. The wood handle provides a firm grip. This universal part holder is small and lightweight, making them easy to move around the workspace or take with you on the go. PRODUCT SIZE: The aluminum holder is 2.5 inches in diameter with 3/4" extension BUILT FOR PROS: This holder can be used for a wide variety of uses - jewelry or watch repairs, gun repairs, and more! TIME-SAVING: By using a universal parts holder, you can keep your workspace organized and reduce the risk of losing or misplacing small parts, which can save you time and frustration in the long run.