Description If the lower part of your head tube has an inner diameter of 66mm you can generally use this headset. ⦁ Lower zs66 blocklock headset bearing pressed into a bearing cup ⦁ BlockLock crown race with seal for a 1.5″ steering tube ⦁ Press-in diameter (ID): 66 mm ⦁ Outer diameter (OD): 72 mm ⦁ Crown race (SD): 1.5″ ⦁ Overall height (H): 2.8 mm ⦁ Offset (D): 16.5 mm ⦁ steering stop: 120° ⦁ Weight: 155g
