The safest Mortise Cylinder Guard around!
1/4 Inch thick Cylinder Guard in Brass.

The recessed cone-shaped ring cannot be gripped by a wrench or crushed.
It is made of hardened steel and is free spinning.
The ring protects the cylinder face from prying tools and will spin freely when attacked by any gripping device.
The Cylinder Guard secures any 1-5/32 inch diameter cylinder from twist or pry-off break in attempts.

Available Colors:
Aluminum
Polished Brass
Duranodic Bronze

Priced and sold each.