Vintage, as shown. Does not have screw in extenders but I am sure they are easily replaced. I am listing other items from my MIL’s pottery studio so I will keep a look out for these parts.

The Giffin Grip is an invaluable re-centering and holding tool for symmetrical(*) leather-hard or bisqued thrown pottery. Designed specifically for trimming. Giffin Grip quickly snaps on and off your wheel. It halves the time previously spent in trimming and makes it practical to trim shapes that might otherwise have been left untrimmed.

Note: An individual Giffin Grip does not work in both clockwise and counter-clockwise directions. Most US potters throw in a counter-clockwise direction (right handed).