SIT - CAL6F35/60 referenced SIT-LOCK SHUTTER product produced by high technology. CAL6F35/60 became irreplaceable of foundations. CAL6F35/60 referenced product which is satisfy the customer's needs, offers advantages of quality and cost. It produced result of tests of laborotory for years. CAL6F35/60 referenced product is an original piece of your foundation or machine, original parts makes your machine live longer.