To facilitate the switching of attachments from the seat of the cab, Case 521E, 621E, 721E, 821E wheel loaders and their various configurations are now available with a new Case-branded hydraulic quick coupler as a factory-installed option. Along with brooms, forks, jib booms and assorted other buckets, the coupler is compatible with Case rapid-fill buckets, which feature a five-degree angle to the floor plate for easier filling and a longer lip and “knife edge” for easier pile penetration.