What is the Connector values in ABAQUS for cylindrical connectors

Hey ABAQUS Users:

I have been using the cylindrical type connectors in abaqus and added the property of elasticity.

Now in the table that comes below there is an option to select D11, which I cannot understand what values should I input in D11.

Please can anyone help by telling what values are needed in D11. 

ThanksAbaqus CAEAbaqusSIMULIA