Features: brand new and high quality 4 corner silica gel shock absorber, anti-vibration, anti-bumps, strong adsorption Combining non-slip function and shock absorption and shock absorption function, durable composite materials, steel, stainless steel, rubber and aluminum Easy to install, suitable for cell phones holders between two holes, single hole fixing is not recommended.installation method First remove the original fixed ball for head, select the fixed ball for head to be installed, align the upper cover of the shock absorber with the base, br/>replace the bottom cover of the shock absorber, install it on the upper cover of the shock absorber, and pull the shock absorbing rubber sleeve firmly on the cover. Made of high-quality nylon plastic + silica gel + 304 stainless steel. Universal smartphone holder Specifications: Material:Aluminum Alloy + Silica Gel Color :Black Size: Approx.63x83x50x46x40mm/2.48x3.26x1.96x1.81x1.57inch Applicable Models: Bicycles, Electric for Cars, Motorcycles Note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.Only the shock absorber is included, and the phone holder is not included. Package includes: 1pcxMobile Shock Absorbe