Sewing Machine Bobbins, Multiple Plastic Bobbins With Case Sewing

Product descriptionMaterial: plastic+metalDimensions: outside diameter: 20mm, hole diameter: 6mm, outside thickness: 11.6mm, inside thickness: 9mmQuantity: 1 piecePackage content: 1 * 25 metal coil box1. STANDARD SIZE: outside diameter: 20mm, hole diameter: 6mm, outside thickness: 11.6mm, inside thickness: 9mm, standard size for most sewing machines2. WHAT YOU GET: 25 pieces of metal spools are enough for daily use. to simplify the measurement3. GOOD QUALITY: Durable hard metal, smooth and shiny without the thread breaking. You can easily wind the thread on these bobbins4. WELL ORGANIZED: Comes with a clear box with each coil in a different location and no clutter5. CAUTION: Please be careful not to add thread to a partially wound bobbin as it may be uneven and the thread may become tangled or torn.