<p><span style="font-size:20px">Brand:ROCKBAO</span></p><p><span style="font-size:20px">Product name: Bicycle Bearing Headset</span></p><p><span style="font-size:20px">Size: 1-1/8 "to 1-1/2"</span></p><p><span style="font-size:20px">Material: Aluminum Alloy + Bearing</span></p><p><span style="font-size:20px">Surface treatment: Anode</span></p><p><span style="font-size:20px">Colors: black, red, blue, gold, silver, colorful</span></p><p><span style="font-size:20px">Weight:</span></p><p><span style="font-size:20px">±132g</span></p><p><br/></p><p><span style="font-size:20px">Specifications:</span></p><p><span style="font-size:20px">Upper bowl cover: 28.6mm</span></p><p><span style="font-size:20px">Upper bowl 1-1/8 inch semi hidden upper stopper diameter 44mm</span></p><p><span style="font-size:20px">Lower bowl 1-1/2 inch semi hidden upper plug diameter: 55mm/56mm</span></p><p><span style="font-size:20px">Lower gear: 30mm or 39.8mm</span></p><p><br/></p><p><span style="font-size:20px">Applicable frame:</span></p><p><span style="font-size:20px">Head tube [upper inner diameter 44MM, lower inner diameter 55MM、56MM]</span></p><p><br/></p><p><span style="font-size:20px">Applicable front fork:</span></p><p><span style="font-size:20px">Standard straight pipe front fork [upper outer diameter 28.6MM, lower outer diameter 30MM]</span></p><p><span style="font-size:20px">Standard anterior fork of vertebral canal [upper outer diameter 28.6MM, lower outer diameter 39.8MM]</span></p><p><br/></p><p></p>