The Signature black phenolic knob is larger for a better grip, with increased heat resistance up to 500°F.
Small (1 3/4″) fits the following:
Round Dutch Oven: 1 qt., 2 qt., 3 1/2 qt.
Oval Dutch Oven: 1 qt., 2 3/4 qt., 3 1/2 qt.
Braiser: 1 1/2 qt.
Signature Saucepan: 1 3/4 qt., 2 1/4 qt., 3 1/4 qt.
Large (2 1/4”) fits the following:
Round Dutch Oven: 4 1/2 qt., 5 1/2 qt., 7 1/4 qt., 9 qt., 13 1/4 qt.
Oval Dutch Oven: 5 qt., 6 3/4 qt., 8 qt., 9 1/2 qt., 15 1/2 qt.
Braiser: 3 1/2 qt., 5 qt.