What should be included in a toilet tank repair kit to reduce customer complaints?

A complete toilet tank repair kit should include the common wear parts that customers may need to replace together. Typical combinations include a fill valve, flush valve, flush button, tank-to-bowl bolts, sealing gasket, and necessary installation accessories. This allows customers to complete the repair without searching for extra small parts. For wholesale or e-commerce sales, a complete kit can also reduce complaints caused by missing parts or mismatched specifications. Installation tools can also be added to the kit to further improve the customer experience.