HOUSING: 1010 Steel, zinc plated plus sealer.
SLIDE and PINION: Die-cast zinc, black organic coating.
BASE: Die-cast zinc with chemical protective coating.
SPRING: 302 Stainless steel, passivated.
RETAINER: Spring steel, zinc plated plus yellow chromate dip.
LOCKWASHER: Spring steel, DACROTIZED†.
SLEEVE: Low carbon steel, black organic coating. KNOB: Nylon, black.
†Registered tradename of Metal Coatings International, Inc.