Bobbin

This 3-speed bobbin is compatible with the Louet S10, S10DT, S51, S51DT, S15, S17, and S75DT. The ratios are 5.5-1 (slow spinning and heavy yarns), 7.5-1 (medium yarn), and 10.5-1 (fast spinning and fine yarn). Holds 180-250 grams of yarn.