Bosch Jigsaw Parallel and Circle Guide is a versatile accessory designed to enhance your cutting precision. It allows for parallel cutting ranging from 5/8 inch to 6 inches (16 mm to 170 mm) away from the edge of your workpiece, making it i for a variety of woodworking tasks. Additionally, this guide enables you to cut circles with diameters between 5 inches and 16-1/2 inches (127 mm to 420 mm). Compatible with all Bosch jigsaws except the JS260 model, it is a practical tool to help you achieve accurate and clean cuts every time.