About us: We offer 100% customer satisfaction. We fully stand behind with all the items that we are selling! Please check our stores for other car and truck parts. Please leave us positive feedback if you are satisfied with the item. But in case you aren’t satisfied the item, please kindly let us know, we will try our best to solve it. Thank you for reading. Product: Size: 8inch Screw length: 170mm Screw diameter: 13mm Cross arm length: 195mm Total claw arm length: 135mm Maximum depth distance of reach: 98mm Distance between the inside of the arms(adjustable): 25-185mm Number of Claws: Two-claw .