The indentations in the perimeter improve maneuverability. Outer diameter: 1.0 inches (25 mm); Knob height: 0.7 inches (19 mm); Thread dimensions: M6 x 0.04 inches (1.00 mm); Thread depth: 0.3 inches (8 mm); Heat resistant temperature: 286°F (130 °C); Female thread type; Country of origin: Italy; Weight: 0.3 oz (8 g)
●外周のくぼみが操作性を向上させる