Features: The extended bicycles head risers screw ensures durability stability with stainless steel construction, preventing loosening during rides for long distance cycling enthusiasts. Featuring corrosions resistant stainless steel and a universals extended design, this screw easily fits various bike models including mountain and road bikes. Perfect for cyclists, commuters, and training riders who need reliability height adjustments to enhancing comfortable during extended rides. Designed for diverse terrains and humid environments, it withstands rain or coastal conditions without rusting, ideal for challenging outdoor activity. With simple installation, it offer quick height adjustments to improve postures and reduce neck strain, making every ride smoother and more enjoyable. Specifications: Dimension:15.6cm/6.14in Component:stainless steel Package Includes: 1pc Bicycles head height increaser note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.