Lost My Keys! Deep Fisting

Where did I leave them? Gerry! Where are my keys???

Jokes aside, this lora helps with deep fisting, from hand and elbow to shoulder deep.
e621 tagged as usual. Recommended strength between 0.4 and 0.7.

Note for cases where you might get a black arm, latex gloves is a very common use for these, you can positive or negative them to your liking.