DRIVE END MOUNTING TYPE SPLINE , BLADE MOUNTING METHOD PIN , DRIVE ADAPTER EXTENSION NOT INCLUDED , SPLINE QUANTITY 50 , SPLINE MAJOR DIAMETER 0.676 INCHES NOMINAL , DRIVE SHAFT ADAPTER NOT INCLUDED , DRIVE END LOCKING DEVICE NOT INCLUDED , MOUNTING POSITION UNIVERSAL , ARM LENGTH 13.500 INCHES NOMINAL , ADJUSTABILITY NONADJUSTABLE , PIN MOUNTING HOLE DIAMETER 0.130 INCHES NOMINAL , SPLINE MINOR DIAMETER 0.587 INCHES NOMINAL ......... S/H ANYWHERE IN LOWER 48 US STATES ONLY ALL OTHERS EMAIL ME FOR S/H QUOTE! S/H TO ANYWHERE IN LOWER 48 US STATES. ALL OTHERS EMAIL ZIP CODE FOR S/H QUOTE!.........PLEASE MAKE SURE YOUR EBAY/PAYPAL ADDRESS AND YOUR EBAY ADDRESS ARE A MATCH WE ARE MORE AND MORE FINDING EBAYERS THAT MOVED YET DIDN'T CHANGE THEIR SHIPPING ADDRESS W/ eBay (WHICH WE USE FOR OUR SHIPPING INFO.)