The top left is Kinsho-san's yarn, 2.8g; the bottom left is also Kinsho-san's yarn, 2.3g; the top right is Daiso lace yarn #40, 5.8g; and the bottom right is Itoizumi-san's mottled yarn, 3.3g. They are all about the thickness of a #40 lace yarn. All are 100% cotton. This is a set of two shuttles. The shuttles are no-brand.