3 Pack Bobbin Cover Slide Plate, 2.87"L x 2.48"W Old-Style Treadle Sewing Machine Slide Plate Compatible with Singer, Silvery Sewing Machine Part

["Packaging and Size: Get 3 pack in one set, 2.87\"L x 2.48\"W. Please refer to the size information in the images to confirm compatibility","Material: Made from high-quality metal, it features high hardness and wear resistance, ensuring long-term use","Use: Ideal for the routine maintenance needs of vintage household treadle sewing machines","Function: Old style foot operated sewing machine push board compatible with butterfly, flying man, bee household old-fashioned foot operated foot accessories needle board cover","Design: The ample quantity is sufficient to meet the repair needs of both households and sewing shops, while also providing a generous supply of spare parts"]