DescriptionAre you looking for a professional, yet affordable sliding bike vertical core? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! Our professional sliding bike vertical core must meet you needs. It is one of the best choices for you.Features- Color: Black. - Size: 9.9 x 2.86 x 9.9 cm. - Material: Aluminum alloy. - Function: Mainly used for modification, you can install your favorite stem. - This sling can be directly installed with 4CM high. If the height of the erection is less than this height, please remember to install the washer after adding it. - Idea for child balance Sliding bike. - Made of high grade aluminum alloy, durable in use. - Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!