Master Grinding & Security, LLC

Master Grinding & Security, LLC is a locksmith in Denville, NJ providing mobile locksmith services, lock installation, and access control systems. This second-generation, licensed, bonded, and insured family business serves residential and commercial clients with security solutions.

Services Offered:

• Residential and Commercial: Key duplication, lock installation (deadbolts, high-security locks), access control systems
• Safe services: Sales, installation, and repair
• Specialty: Fire door inspections, proprietary Lockdown Magnet® for classroom security

Service Areas:

• Northern New Jersey (based in Flanders, Morris County, NJ)

Business Details:

• Licensed, bonded, and insured
• Second-generation family business

Key Highlights:

• Mobile locksmith services available
• Proprietary Lockdown Magnet® for classroom security