Carlton cremator Long Range - Invector plus

As title says. Sold the gun its from so no longer have a need for it. Been my go-to goose choke for a while. Tried many in my sx4 and this one was the best.  Selling to fund the same choke in the thread pattern of a new gun.  Retails for 79.99+tax at cabelas. Asking $50. Willing to ship at buyers cost.