There are many different sizes of attachments, and are the mechanism that is the flagpole of the Ultimate Hose Clamp

Attachments attach directly to either a spindle base, drop arm or an arm. Each attachment regardless of size assembles the same and includes 3 screws. 

** The below picture has the screws protruding from the "claw", they sit deeper, and it was only done like this to highlight where it goes.