Lot of 100 Metal Zippers Brass 3 inch Sewing Closed End Semi Auto Lock NEW

YKK Lot of 100 Sewing 3.0 inch long Gray Material - Color 301 Brass Zipper YGRC-459 GSN8 J 7/16 Kensin N-Anti YKK Made in America I think this code means type Y-Bar Brass = YGR zipper function Closed Bottom = C element size 4,5 = 45 slider function Semi-Auto Lock = 9 slider body type Pressed Brass = G slider body function Semi-Auto Lock = S slider finish Nickel = N tape width 7/16