Check the listing for details. 4 Spring Aluminum Arm Kit Pin to Pin for Dump Truck Tarp Systems up to 95" Long. Condition: New. Listed at 600.00 USD. This is what you need if you're replacing the framework for the aluminum external mount system of your 10' - 24' dump truck. Sometimes called an "arm kit," it has everything you need to replace your system parts from pivot pin to pivot pin.Arm Kit Includes(2) pivot pin sets including:(2) 78" lower aluminum arms(1) 3.7" steel pivot pins(8) spiral torsion springs(4) stainless steel bushings for pivot pin(2) external retaining rings(2) 95" aluminum side arms(1) 95" Aluminum cross tube(2) 90-degree corners(2) plastic tarp centering flangesall mounting hardwareDoes not include roller, motor, switch kit, or wire.This is what you need if you're replacing the framework for the aluminum external mount system of your 10' - 24' dump truck. Sometimes called an "arm kit," it has everything you need to replace your system parts from pivot pin to pivot pin.Arm Kit Includes(2) pivot pin sets including:(2) 78" lower aluminum arms(1) 3.7" steel pivot pins(8) spiral torsion springs(4) stainless steel bushings for pivot pin(2) external retaining rings(2) 95" aluminum side arms(1) 95" Aluminum cross tube(2) 90-degree corners(2) plastic tarp centering flangesall mounting hardwareDoes not include roller, motor, switch kit, or wire.