This is a Greasable Index Arm Pivot Shoulder Bolt to replace Dillon part #13276
Works for the RL-1100, Super 1050, and the CP-2000.
You no longer needs to be removed the shoulder bolt for maintenance. Just pump a squirt of grease in using the included grease zerk.
The bolt is made in the USA from American Hardened 4140 Chromoly Steel for a long service life.