Southco - R4-10-42-506-20 referenced snap lock product produced by high technology. R4-10-42-506-20 became irreplaceable of foundations. R4-10-42-506-20 referenced product which is satisfy the customer's needs, offers advantages of quality and cost. It produced result of tests of laborotory for years. R4-10-42-506-20 referenced product is an original piece of your foundation or machine, original parts makes your machine live longer.