EXTRA ANTLER INSERTS Mule Deer, Whitetail, Blacktail, Coues, Fallow, Axis, Sika Antler Inserts | US Patented: No. 11,535,051 Do you have too many antlers lying around, and you don't know what to do with them? Well, GOOD NEWS! You could buy more ANTLER INSERTS to swap them out on our RACK HUB® products! These inserts are manufactured with high precision aluminum and then finished in a protective matte black coating. These inserts are PATENT PENDING and will work with all of our products excluding the XL version(s) Hex to Hex Connection - Our Antler Inserts have a hex shape on the inner diameter that nests neatly over the hex stem coming off of the ball. This Hex to Hex creates a no-slip connection to keep your antlers fixed right where you want them. Antler Versatility - Any antler that has an antler insert installed can be swapped out at any time, no matter the species. Take them off, show them around, and dock them back. Friction Fit - Our ‘friction fit’ refers to the 12 splines on the outer portion of the insert that fit into the antler without the aid of any adhesives. No waiting for glue to dry.