[Magnetic Bobbin Holder]: These magnetic bobbin holders help keep bobbins organized, prevent thread tangling, save space, and assist in organizing your sewing machine area. They also allow for easy color or type classification of bobbins. [Easy to Use]: Simply attach the holder to your sewing machine and place bobbins on it by category for convenient storage. To remove, gently lift with your hands. [Materials]: Made from high-quality, high-hardness ABS plastic—durable and resistant to breakage. Features two strong magnets with a suction force up to 3000 Gauss, ensuring secure attachment to the sewing machine. Includes silicone anti-slip, shock-absorbing pads for stability and quiet operation. Size: 67 x 112 mm. Compatible with bobbins used in computerized flat-bed sewing machines, synchronized sewing machines, double-needle machines, bar-tack machines, buttonhole machines, and similar models. Color: Blue Package Includes: 1 x Bobbin Holder Note: Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.