50 pk Singer Transparent Bobbins 85128 Class 15J Pack of 50 transparent Singer class 15J bobbins. Fits Singer models 2639, 3962, 4116, 7412, 7422, 7424, 7426, 7436, 7442, 7444, 7462, 7463, 7464, 7466, 7467, 7468, 7469, 7470, 8763, 8770, 9960, CE-100, CE150, CE-200, CE250, CE350, XL400, New Athena model 2009.