Adapter enables the use of Water Wand squeegees with Acme-threaded-end extension poles. Strip-resistant die cut ensures durability. Easy to attach to all Unger® extension poles. Adapter Type: Acme Insert; Connects Devices (From/To): Extension Pole to Squeegee; Stem/Thread Type: Acme Thread; Tapered Socket; For Use With: Unger® ED370, ED450, ED550, ED901, EZ120, EZ250, EZ400.