“L” for kennel doors. 90 deg rotation CCW to unlock. 5/16″ sq shaft x 2.25″L , 1.5″ screw centers, blind mount. Includes adjustable cam as seen in photo. Keyed alike, #112 key. Drill holes required are center hole at 7/8″ diameter, mount hole are at 3/16″ dia.x 1.5″ BC. Rotation determined by location of hinge. Facing door, hinge on left= CCW rotation.