Vintage Zipper Repair Solution Ykk&reg; #4.5 Slider with Semi-automatic Locks - Color 4 Brass and 4 Aluminum (8 Sliders/pack) Vintage Zipper Repair Solution (Special) YKK #4.5 Slider Color 3 Brass and 3 Aluminum (6 Sliders/pack) Work on zippers needing to be repaired. Fit with zipper #4.5 brass chain Fit with zipper #4.5 aluminum chain