Do you like to suffer? Do you want a real challenge? This serrated core makes picking one of our practice locks a significant challenge. Serrated pins have a number of horizontal grooves that like to get hung up on the sheer line. If that was not hard enough by adding grooves to the core it makes the task is even more daunting by ever increasing the number of ways that serrated pin can get hung up.

This serrated core is compatible with SPARROWS cut away locks, progressive and side winder.

For removing a core it is recommended you have a plug follower. We have a few different options if you do not already have a plug follower.