Gradually Decreasing Pitch (GDP) designed to facilitating even tension on the hair, by making teeth closer to the grip close to each other than the teeth further from the grip..
The holes also act as a measuring device (each hole is spaced 1 cm apart)
Heat Resistant up to 220 C (428 F)
Round Tooth: The rounded teeth maintains equal tension, even if the combing angle is changed, and mimics the smooth, controlled feeling of using your fingers.