48" Jacket Zipper ~ YKK #10 Extra Heavy Duty ~ Brass Separating ~ 501 White (1 Zipper / Pack) 48" Jacket Zipper ~ YKK #10 Extra Heavy Duty Brass Separating ~ 501 White (1 Zipper / Pack) #10 YKK extra heavy duty brass separating zipper. Made from the finest quality metal to ensure extra strength & reliability.