Gerwah - GWB DKN20/38-8H7-10H7 referenced Ring spring product produced by high technology. GWB DKN20/38-8H7-10H7 became irreplaceable of foundations. GWB DKN20/38-8H7-10H7 referenced product which is satisfy the customer's needs, offers advantages of quality and cost. It produced result of tests of laborotory for years. GWB DKN20/38-8H7-10H7 referenced product is an original piece of your foundation or machine, original parts makes your machine live longer.