Universal Luggage Rack - Our versatile bike rack is perfect for carrying light or even very heavy luggage High Load Capacity (25kg) - To stability and safety, our luggage racks are made of high-quality aluminum alloy.The frame is very stable and will not bend even under extreme loads.FITS ALL MOUNTAIN BIKES AND SIZES - Fits most 26, 28 and 29 inch bikes.the rear rack bracket out to easily extend it rearward.QUICK INSTALLATION - Compared to traditional luggage racks, our product simply turns the fastening clip on the seatpost and tightens with the quick release to install.The tube can be optimally adapted using the included accessories.Quick-release, , with reflector taillights, including side (guardrails), with elastic ropes, adjustable front and rear positions of the shelves, and adjustable height of support feet [Weight] Net weight 1.225KG [Size] The length of the shelf surface is 55CM, the width is 14.5CM, and the supporting feet can be adjusted to a height of about 35-45CM.[Material system] High-strength all-aluminum alloy [Suitable Models] 24inch-29inch bicycles with a post diameter 33MM, suitable models include Oyano, ATX, and other series, and many mainstream mountain bikes such as Warrior and series can be installed.The diameter of most tubes of bicycles is 35MM, and the tubes of models such as SP8 are too thick to be installed.[Accessories] 6 screws, 6 nuts, 6 fillers, 4 small washers, 4 washers.Frequently Asked Questions: 1.Why can't the screw be screwed in when it is turned halfway?Answer: Because it is a non- nut with a rubber ring inside, it will not turn when half-twist, but as long as it is turned hard, it will be enough to pierce the rubber ring.This kind of screw is not y to out after it is installed.Very safe.2. How much can this shelf carry?This shelf 671-09 and the store's 620-09 are relatively strong and have a relatively load among the quick-release shelves currently on the market.High Load Capacity (25kg) Colour:Black Material:alloy Size:55x14cm Package Contents: 1 * bike rear rack 6 * screw 6 * Nut 6 * Filler 4 * Small spacers 4 * big spacers 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.