Borgeson Rag Joint BOR053449Borgeson Rag Joint3 4" 36 x 3 4"DD BOR053449 R053449 On some factory applications, a flexible coupling was used to attach the column to the steering box when there was perfect alignment. If the original column or box is changed, the stock coupling may not work. If a conversion from a long input steering box to a short input with an after market column is done, a flexible coupling needs to be added. Flexible couplings are only available in steel.