upholstery sewing machine These sewing machines with triple feed ndustrial walking-foot machines built for leather, upholstery, canvas, marine work & heavy materials — here’s the SPEEDWAY heavy-duty lineup 🇺🇸⚙️ Each model is fully assembled, tested, and includes servo motor table stand. SPEEDWAY SW-82440 — Post-Bed Walking Foot For bags, shoes, leather goods & 3D curves. 💵 $3,475 SPEEDWAY SW-4400N — Standard Heavy-Duty Walking Foot For upholstery, canvas & leather panels. 💵 $1,589 SPEEDWAY S