What this product does WS25011A UM-adapter converts between a 3.8 cm (approx. 1.5") dry/wet cleaner accessory and 2-1/2" dry/wet vacuum hoses. It also allows seamless connection to smaller tools and attachments with a 1-1/4" diameter using the UM-adapter accessory. Key benefits — why you need it Simplifies connections: eliminate incompatible fittings and avoid makeshift adapters when switching between hoses and tools. Saves time: fast, secure connections speed up routine cleaning and jobsite changeovers. Built for regular use: made from durable materials for long-term reliability in home or work environments. Ready supply: includes 2 vacuum hose adapters so you have a spare or can share one with a colleague. Important attributes Function: adapter for converting between 3.8 cm accessory and 2-1/2" hoses; supports connection to 1-1/4" attachments via UM-adapter. Compatibility: designed specifically for dry/wet cleaner accessory dimensions shown (3.8 cm) and 2-1/2" vacuum hoses; works with 1-1/4" tool/attachment interfaces when used with the UM-adapter accessory. Size: matches 3.8 cm, 2-1/2" and 1-1/4" connection points as described. Material & durability: constructed from durable materials for everyday use and long service life. Packaging: two adapters included. Practical use scenarios Workshop cleanup: connect larger 2-1/2" shop vac hoses to smaller handheld tools or accessory heads for rapid collection of sawdust and debris between cuts. Home renovation: switch a dry/wet vacuum between floor nozzles and detail tools without searching for multiple adapters, keeping cleanup fast and efficient. Shared jobsites: keep one adapter on a primary vacuum and carry the second for a partner or backup, reducing interruptions when multiple users need to connect different tools. Performance and ease of use Provides a secure, low-fuss connection that reduces air leaks and maintains suction performance when joining different-sized hoses and accessories. Straightforward to install and remove for quick tool changes during cleaning tasks. Includes: 2 × WS25011A vacuum hose UM-adapters.