BIG Jazzy Cup Holder For Jazzy, Evo, Go Chair, Elite 14, HD And Others. This fits 44oz cups and other large style cups. This fits into the arm rest using the 3/4 inch tube on the side opposite the joystick. You will need a 4mm Allen wrench to tighten it down. This cup holder comes in two parts allowing it to be removed without tools once installed. This is made with carbon fiber infused plastic and can range in color from dark grey to black. See pictures, last picture is for reference on the armrests.