● for 15 Bobbins and 1 Bobbin Case.
● Suitable with Bernina 7 series bobbin #0334365400 and various Jumbo industrial bobbin storage.
● 1 threader (DW-W300) is included.
● Special cushion base design keeps bobbins in place.
● Keep bobbin thread from getting tangled or unwinding.
● Suitable for bobbins size in Diameter x Height : 26.85 x 12.5mm ± 0.5mm .