The extendable angle box handle features an easy adjust with a "twist lock" from 58"-78". Fits every major brand angle boxes and lasts longer than any standard fiberglass angle box handle. Great for finishing the hard to reach tight angles, and tough areas! The best priced extension angle box handle on the drywall market. The value is un-matched. An extension handle for an angle box is an indispensable tool for your corner finishers.