Need help identifying this 8.25 Suregrip

Woodie said
Bottoming out on what specifically?..

The cones on either end are a interference fit to the case, when they wear down they bottom out in the case halves making the sure grip a sure slip. Here is one I sold for a 8 3/4 but the internal workings are the same. Look at the pictures.
https://www.forabodiesonly.com/mopa...pe-borg-warner-spin-resistant-2881343.426847/