Functionality: Facilitates controlled winding and unwinding of tension within torsion springs. Specifications:Featuring a diameter of 1/2 inch and a length of 17.2 inch , equipped with a anti-slip rubber handle for secure grip and precise control. Composition: Constructed from high-strength 45# steel, with a galvanized finish enhancing both resilience and appearance. Advantages: The anti-slip handle enhances safety by ensuring a secure grip during usage. Essential Tool: Torsion Spring Winding Rods are crucial for safe adjustments to balance garage door weight. Using these rods for spring replacement or adjustments is strongly recommended to prevent potential injury and property damage., Manufacturer: Ounfhtrttk