HA134SET

Manufacturer: GKL Products

Product Description: Hinge Doctor - HA1, HA3 and HA4 New Notched Set (Includes Case)

The Hinge Doctor HA1 :(BLACK) Works on most standard, non ball bearing 4 1/2 x 4 1/2" hinges.

The Hinge Doctor HA3 :(BLUE) Usually used for 5" x 5" ball bearing hinges.

The Hinge Doctor HA4 :(RED) This is the largest Hinge Doctor model, the HA4.

This fits over knuckle sizes of of approx. 9/10 of one inch.

These are common used on large institutional doors in hospitals, prisons, and other locations with large doors