Low MOQ Custom Pocket Spring Unit for Sofa Seat Cushion and Upholstery with Free Sample for Furniture BuyersProduct Specifications Pocket Spring Coil Unit for Hotel Sofa Seat Cushion and Commercial Furniture Upholstery Manufacturers Product Name Customized L-Shaped Sectional Sofa Pocket Spring Material High Carbon Steel Wire Wire Diameter 1.0mm – 2.3mm Head Diameter 4 – 6.5cm Middle Diameter 4.5 – 7.5cm Height 6 – 25cm Turns 4 – 7 Turns Coil Counts According to client