The die cast connecting links on the Challenger Press, Progressive 1000 and the Turret Press have been redesigned and are now a one piece steel construction. The connecting links are installed exactly the same as the die cast links, however, there is now a top and bottom to the connecting link.
When you install it be sure to install the short legs to the press and the long legs to the toggle. If the link is installed up-side-down, it will prevent full travel of the ram.
(Qty 1) #TP2129 (steel connecting link)-
http://leeprecision.com/connect-link.html