Rocket (Eruca vesicaria) is a vegetable from the family Turpentaria (Brassicaceae) that eats leaves as a salad. Although rocket vegetable to produce small areas our country, it has started to make production in large and larger areas in recent years. This study aimed to determine the strength of Rocket (Eruca vesicaria) specifications for mechanical harvesting. For this purpose, properties as the maximum force, stress in the maximum force point, work at maximum force point, shearing force, deformation at maximum force, bioyield force, and shearing stress of rocket (Eruca vesicaria) stalk, leaf and root have determined. Average values for maximum force, stress, work to maximum force and deformation in maximum force were determined as 4.820 N, 0.474 MPa, 0.015 J and 22.149 mm, respectively. The shearing force and shearing stress were found to be as 2.150 N and 0.219 MPa, respectively. Average values for bioyield force were determined to be 3.856 N. These features can be used in determining the design and operating conditions for the mechanical harvester cutting blade.