HomeCompanyProductsBuyPress ReleasesContact
About the Company

Master Grinding & Security, LLC is a licensed, bonded, and insured mobile locksmith with 24 hour emergency service. The company has been in business since 1956.

In 2008, the administration of a local middle school expressed concern to the town’s Police Chief about simplifying lockdown procedures. The Denville Township Police Department then requested of Chris Ambrosi to develop a solution for faster and easier lockdowns. The products were designed to efficiently and effectively provide a quicker solution for securing a door during lockdown procedures. The magnets are currently Patent Pending, and have been installed in 49 different states with over 65,000 distributed.

HOME | COMPANY | PRODUCTS | BUY | PRESS RELEASES | CONTACT | SITE MAP
Copyright © 2013 Master Grinding & Security, LLC. All rights reserved. Patent Pending.