For mount hidden is specially designed for bicycles with front fork holes(Note: for is not included!). After the for mount is installed on the hole of the bicycle front fork, will notice that there is an for hidden inside except you. This effectively prevents the bike from being stolen and lost. For mount hidden can perfectly protect the from water and dust. Made of high-quality aluminum alloy and plastic material, the is strong and durable. The expansion plug design makes the for mount perfectly fit your bicycle's front fork hole, after being installed on the bike, the for will not fall off even in bumpy riding. Material: Plastic + aluminum alloy colour: black Package Contents: 1 x For Mount Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.