Bracketron Car or Truck 30MM Telescoping Support Arm Brace - Adds Stability for Mobotron Universal Vehicle Laptop Mount (LTM-SA-102) Brace can be mounted several different ways to add stability to your Laptop Mount Features "Twist Lock Mechanism" to allow adjustment to the proper length customized to fit your vehicle Telescoping brace expands from 15" to 24" Provides extra support for the Universal Vehicle Laptop Mount Mounts to seat bolt or any hard surface using 3M dual Lock Fastener