I got three of these from Aliexpress:
https://www.aliexpress.us/item/3256802662227487.html
There are many versions of that and I got different ones from different sellers and I could hardly tell the difference, so they are all using the same mold and materials. I remove the teeth on all of them. Then I customized them by getting these TPE tongues
https://www.aliexpress.us/item/3256804114690576.html
and using a butane blowtorch and a small paring knife, I grafted the TPE tongue onto the tongue in the toy. I heated the knife with the flame, and then first cut away some of the underside of the TPE tongue on a bias so that it tapered to a thin edge at the back. I then heated the knife up again and melted the top of the toy's tongue as I laid the TPE tonge on top of the hot knife at the same time. Holding the TPE tonge in place, I withdrew the hot knife so that the two melted tongue surfaces came together and fused. I did this with the toy partly turned inside out so the tongue was accessable without melting the lips. I did this to two of the three toys, learning from the first to make the second better. The result is two of the most outrageously good blowjob toys I have ever felt, bar none. I've got a Fleshlight swallow, FL Turbo, a La Bocca Della Verita, and a bunch of other ona holes, so I have played the field. These things are insane! To make them more ridiculous, I used the same hot knife to cut away material around the outside to make them fit into this onahole holder for the SR6:
https://yourhobbiescustomized.com/products/geogans-onahole-la-bocca-della-verita-holder-v1
I had to cut away a ring of material around the widest part so that it fits in snuggly and won't move, but has room to expand. I poked a hole in the back end by first inflating the toy and then used an exacto blad to pierce the back surface until it deflated. That ensured that a one-way valve was created so the suction is perfect every stroke.
Lads, let me assure you, the tongue action is beyond anything I thought was possible, the lips are thick and feel very real, and the deep throat with suction makes it really easy to cum very hard. The swirling action of the tongue when the Twist axis moves is out of this world because the texture of the TPE tounge is very real, and the underlying firmer material makes the tongue flick and slither around so I don't think I've ever felt a real blowjob that was better.
When I play with these toys in the SR6 with a VR move script, or in VAM with CGI models in VR, the feeling is on a whole other level. I'm going to make the third one soon now that I've had several months with the first two.
If you have a dick, you need this toy.