RAC-RK11888 is a replacement T Handle for the Racor 500MA, 503MA, 900MA and 1000MA series turbine assemblies. It comes with the T Handle and T Handle o ring (11350). Thread is 9/16″ 18 UNF. From where the ORing sits to the end of the threads is 7/8 inch.
From where the ORing sits to the top of the Tee is 1 1/8 inches. It is "open box" and out of its packaging, but looks to be new.