6.35mm Female to 6.35mm Male Stereo Adapter

This adapter extends a 6.35mm QTRS (stereo) Plug to a (You guessed it!) 6.35mm QTRS Plug.  It adapts to connect large-body 1/4 inch plugs that don't fit into tightly-spaced 1/4 inch jacks.
 
Available from Amazon at:
https://www.amazon.com/dp/B0CKQY9QZ7?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1