Description: Function: This stem is a good accessory that helps you increase the height of the handlebar, making you feel more comfortable when cycling, you can order according to your needs. Non-slip: There are equipped with 4 pieces of pads on the extender, you can adjust the height through them, and the screw fixes the adapter firmly, not easy to slip or fall off. Compatibility: This bicycle stem extension tube is suitable for handlebar of 28.6mm, please make sure the size of your bike fork before ordering, avoiding trouble. Long-lasting: The front fork height riser is made of aluminum alloy material, you can use it for a long time because it is sturdy and durable, not easy to be cracked or damaged. Lightweight: The bike stem spacer will not burden the handlebar, you can use it without worrying about influencing your riding, not easy to make trouble for you. Specification: Material: aluminum alloy. Color: black, red. Size: approx. 120mm/4.72inch. Approx. 135mm/5.31inch. Approx. 188mm/7.4inch. Approx. 217mm/8.54inch. Base diameter: approx. 28.6mm/1.13inch. Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. Package Includes: 1 Piece Bike Fork Stem Extender.