zigzag spring for sofa

1.Protech is professional to make spring,it also called sofa spring or zigzag spring for furniture 2.We have the sofa mattress spring, pocket spring, and relatived hardwares. They are both used for the sofa. 3.The packing: 5000pcs/pallet, or 400pcs/bag. 500pcs/bag. 4. Different sizes are available. Data informations H(mm)W(mm)Arc(mm)D(MM)L4616-258-153.0 3.4 3.5 3.6 3.8 4.0up to client 4716-258-153.0 3.4 3.5 3.6 3.8 4.0up to client4816-258-153.0 3.4 3.5 3.6 3.8 4.0up to client4916-258-153.0 3.4 3.5 3.6 3.8 4.0up to client5016-258-153.0 3.4 3.5 3.6 3.8 4.0up to client55258-153.6 3.8 4.0up to client