The Blodgett 16686 is a knob designed for Blodgett commercial ovens. The "2 D" likely refers to its design or style, perhaps indicating a double-sided or dual-function knob. The "Pointer" signifies that the knob has a visual indicator, or pointer, to show the selected setting, such as temperature or timer. https://partsfe.ca/16686-blodgett-knob-2-d-pointer