The upper clamp is made to the jig rod in any direction, facilitating versatility and ease of operate These zipper jigs are designed to secure the sliders none matter what size your zipper sliders are, our jig sliders can grip and hold it The unique design lets you easily position and install a zipper pull onto your tape, saving you valuable time The sewing zipper tool is make of and Metal, strong and enduring Light weight, easy to use Fatures a lower clamp that securely latches onto your work counter, ensuring a sturdy base for your tasks