The Hydraulic Tractor Trailer Jacks have the Shafts with Shaft diameter ranging from 10-280mm. We believe in transparency when it comes to payment of advance or full cost. We provide our patrons with numerous payment options for their convenience and ensure the methods are safe. Our product is packed in industrial grade packages that are recyclable and provide protection to the products from physical and chemical damage. Additionally, the product is properly labeled to provide information.