Upgrade your cushion and pillow projects with the YKK #4 aluminum slider, a reliable metal slider designed for smooth, easy operation. This single pull tab slider works with standard zipper tape to create both open-end and closed-end zippers, making it ideal for garment, cushion, and pillow applications. The non-locking slider glides effortlessly along the zipper chain, while the auto-lock feature helps keep the zipper secure. No tools are needed for installation, so you can quickly replace or repair zippers with confidence. Available in finish options like nickel silver, matte nickel, and antique silver, this replacement zipper slider offers compatibility with #4 zipper elements and delivers a clean, standard metal zipper finish.