Used Vintage Corning Ware Detachable Lock-On Casserole Handle P-10-HG
Photo of original box for reference (original box not included)
Corning Ware detachable handle fits all saucepans, skillets and saucemakers
Convenient to use for serving or when removing from range or oven.

Corning Ware Lock-On Detachable Handle works easily:
With one hand, hold the body of the handle firmly onto the dish. with the other hand, twist the knob at the end of the handle to the right to lock to the left to detach.