Limit Switch Lever Arm, Actuator Type: Adjustable Roller, 1.50 in to 3.50 in Arm Length/ OVERALL LENGTH: 1.50 INCHES MINIMUM AND 3.50 INCHES MAXIMUM OVERALL HEIGHT: 0.97 INCHES NOMINAL OVERALL WIDTH: 0.73 INCHES NOMINAL OVERALL DIAMETER: 2.00 INCHES NOMINAL END ITEM IDENTIFICATION: WPN ELEV DOOR SPECIAL FEATURES: ARM- CAST ZINC COLOR: BLACK MATERIAL: PLASTIC NYLON