Features: High speed automatic cutting thread, it is very efficient and convenient. Made of high quality metal, durable and anti-corrosion. Bobbins stop spinning faster, preventing unraveling or tangling of bobbin thread when sewing operations stop and start. Easy to use and store, very convenient. Compatible for singer model: 27-1 27-2 27-3 27-4 27K-1 27K-2 27K-3 27K-4 28-1 28-2 28-3 28-4 28-8 28-9 28K1 28K2 28K3 28K4 127-3 (MOST) 127-12 (MOST) 127K (MOST) 127K3 (MOST) 127K4 (MOST) 128-3 (MOST) 128-4 (MOST) 128-8 (MOST) 128-12 (MOST) 128-13 (MOST) 128-18 (MOST) 128-23 (MOST) 128K (MOST) 128K3 (MOST) 128K4 (MOST). Specification: Material: Metal Color: Shown as Picture Part Number: 83505(Shuttle Case), 8228(Shuttle Bobbin) Applicable Model: (as follow) Suitable for singer model: 27-1 27-2 27-3 27-4 27K-1 27K-2 27K-3 27K-4 28-1 28-2 28-3 28-4 28-8 28-9 28K1 28K2 28K3 28K4 127-3 (MOST) 127-12 (MOST) 127K (MOST) 127K3 (MOST) 127K4 (MOST) 128-3 (MOST) 128-4 (MOST) 128-8 (MOST) 128-12 (MOST) 128-13 (MOST) 128-18 (MOST) 128-23 (MOST) 128K (MOST) 128K3 (MOST) 128K4 (MOST). Package list: 1 x Shuttle Case 5 x Shuttle Bobbin Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1High speed automatic cutting thread, it is very efficient and convenient. 2Made of high quality metal, durable and anti-corrosion. 3Bobbins stop spinning faster, preventing unraveling or tangling of bobbin thread when sewing operations stop and start. 4Easy to use and store, very convenient. 5Compatible for singer model: 27-1 27-2 27-3 27-4 27K-1 27K-2 27K-3 27K-4 28-1 28-2 28-3 28-4 28-8 28-9 28K1 28K2 28K3 28K4 127-3 (MOST) 127-12 (MOST) 127K (MOST) 127K3 (MOST) 127K4 (MOST) 128-3 (MOST) 128-4 (MOST) 128-8 (MOST) 128-12 (MOST) 128-13 (MOST)