This is a compact jig that simplifies vertical drilling. Enables precise vertical drilling in various materials—metal, wood, plastic. The design allows comfortable use even on rounded or angled surfaces. Made from heat-treated, damage-resistant steel for durability. Includes 17 holes with labeled drill sizes ranging from 1/8 to 3/8 inches. Center guide marks aid in positioning. Its small size and light weight allow it to be carried in a pocket.