Tandler - SP B1-1.1-39-I referenced Worm shaft product produced by high technology. SP B1-1.1-39-I became irreplaceable of foundations. SP B1-1.1-39-I referenced product which is satisfy the customer's needs, offers advantages of quality and cost. It produced result of tests of laborotory for years. SP B1-1.1-39-I referenced product is an original piece of your foundation or machine, original parts makes your machine live longer.