A pocket hole jig is a woodworking tool designed to create angled holes in wood, allowing for strong and hidden joints. It consists of a guide that holds the drill bit at a specific angle, ensuring precise and consistent holes. This technique is commonly used in furniture making and cabinetry. Using a pocket hole jig simplifies the assembly process by enabling screws to be driven into the angled holes, which keeps the joints tight and secure. This method is popular among both amateur and professional woodworkers for its efficiency and the clean appearance it provides to finished projects.