Product size specifications: Spring total length 10 inches/25.4CM, 11 coils, inner diameter coil length 6 inches, individual weight: 1.88 pounds Product Material: The spring is made of heavy-duty steel and is coated with black electroplating on the outside to prevent rusting. It is sturdy and durable, making it an ideal replacement part Product applicability: Suitable for replacing the slope door spring of 173067 trailer, it is an ideal replacement component Product function: If the torsion spring breaks and is not replaced in time, it will cause the slope door to collapse and be damaged. Timely replacement of the new slope torsion spring can make the door easier to lift and lower, and improve work efficiency Installation: Use tools to remove the hinge, remove the damaged torsion spring, and then install a new torsion spring to restore normal operation Product includes: 2Pcs toy transport cart ramp door springs