Lee Precision Die Lock Rings 3pk
Lee Precision's self locking die rings use an o-ring to friction lock your dies in place, just finger tighten and they hold the adjustment rock solid.
These rings have the standard 7/8-14 thread, and they can be finger-tightened so you do not need to buy any extra tools in order to use them. No set screws necessary, simply finger tighten and start loading!
Package of 3