Description Features: 100% brand new and high quality Fit hope, mavic, dtsw and many other 12/15mm shaft centers through regular quick release -yoke. Made of 7075 anodized aluminum alloy, machined cnc. Converts 12mm shaft by Middle of shaft to fit 9mm shaft (quick release) . Converts 15mm shaft through shaft to suit 9mm shaft (quick release). Professional and durable,you deserve it. Package Includes: 1 x Conversion Adapter. Specifications: Material: Aluminum Alloy Color: Black Type: 12mm/15mm note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you