Aluminum body with a round stainless steel 5/8 inch bolt (total length of bolt in and out of body is 1 9/16 inches. Takes standard one inch mortise cylinder with adams rite cam (included with a Yale Y1 or 999 keyway and 2 keys). Can easily be keyed into an existing key system by just changing the cylinder. Very heavy duty.

Case is 5-7/8” x 1-3/4” x 1” ingot aluminum
Stainless steel bolt is 5/8” round
Bolt protrudes 1-9/16”
Turn key 90 degrees and bolt drops
Cylinder w/2 keys included

Great for prison doors, sliding doors, revolvong doors or anywhere a heavy duty keyed surface bolt is needed.