Material and construction - Material: Plastic and stainless steel - Spring action: Reacts to varying fabric heights to maintain consistent pressure during sewing - Visibility: Clear plastic body allows you to see the stitch line and needle path at all times - Compatibility: Fits all 7mm feed dog machines Key benefits - Adapts to fabric thickness in real time to support even stitching across layers and varying heights - Helps reduce fabric shifting and misalignment by maintaining steady pressure - Clear view of the stitching area enables precise placement and alignment - Durable construction combines a plastic body with a stainless steel core for reliable performance What makes it stand out - Spring action automatically adjusts to fabric height, improving stitch consistency on multi-layer or uneven fabrics - Clear visibility during sewing reduces guesswork and helps with accurate seam placement - Specifically designed for all 7mm feed dog machines, ensuring broad compatibility 2-3 practical use scenarios - Quilting with layered fabrics: works well when sewing a quilt sandwich that includes batting and multiple fabric layers, helping maintain even stitching as thickness changes - Denim and leather accents: suitable for patches or decorative stitching where thickness varies between layers - Garment hems and edge finishes on bulky fabrics: assists in maintaining smooth feeding and consistent seams when dealing with stacked or bulky materials Note - For all 7mm feed dog machines - Material and spring action designed to respond to fabric height changes while keeping the stitching area clearly visible through the clear plastic component