Attic Ladder Hinge Arms Left Right Hand Balance Arm Replacement for Werner Mk5 WU2210 W2208 W2210 1. Compatible Model: This attic ladder hinge arm kit is compatible with Werner Mk5, WU2210, W2208, and W2210 models manufactured after February 2010. 2. Replacement Parts: These components allow you to replace only the hinge arm instead of the entire attic ladder, saving time and cost while improving durability and functionality. 3. Upgraded Design: The hinge arms feature electrophoretic coating and a triple-layer galvanization process for enhanced wear and corrosion resistance. 4. Easy Installation: The kit includes 2 hinge balance arms, 8 screws, and 4 washers for straightforward installation, enabling quick replacement of worn or damaged parts. 5. Reliable Performance: Designed for precise fit and strong load-bearing capacity, these hinge arms ensure secure operation and long-lasting performance.