Favorite Locksmith Jig for Installing Deadbolts | Penetration Expert Blog
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A1’s Bulls Eye Installation Tool was designed specifically for locksmiths. The Bulls Eye Installation Tool includes a toggling backset adjustment and self centering alignment guide which allows users to easily install and drill a door for deadbolts and locksets. I highly recommend this tool and I have been using it daily for 15+ years.
A1 Security Bullseye lock jig