Peak Design Motorcycle Stem Mount Black One Size. Securely installs in most hollow-center steering stem nuts using an expansion plug. Features an ultra-strong magnetic/mechanical mounting technology (called SlimLink) that grabs and locks your phone so effortlessly it feels like magic. Attach your phone in portrait or landscape and remove it instantly with the press of a buttoneven with riding gloves on. A rigid adjustment arm lets you customize your phone position and viewing angle. Best-in-class vibration isolator prevents phone damage yet preserves enough stiffness so you can easily interact with your phone while mounted. Weatherproof machined and anodized aluminum construction with stainless steel fasteners. Requires a Peak Design Case or Universal Adapter (sold separately). Specifications for Peak Design Motorcycle Stem Mount: Manufacturer: Peak Design Finish: Anodized Fabric/Material: Silicone Color: Black Weight: 4.44 oz Features of Peak Design Motorcycle Stem Mount Securely and rigidly mount your phone on sport or street bikes with clip-on style handlebars Fits any bike that has (or can be outfitted with) a hollow steering stem nut (inner diameter 13mm-26mm) Holds phone in portrait or landscape mode Magnetic locking technology (called SlimLink) is ultra secure and feels like magic No-look 1-handed phone attachment and removal Locking mechanism strong enough for any motorcycling activity or terrain Mounting arm has 180-degrees of rotation for optimal phone placement and viewing angle Best-in-class vibration isolator prevents damage to delicate phone components Weatherproof durable aluminum construction Package Contents: Peak Design Motorcycle Stem Mount Motorcycle Stem Mount Expansion Plug Large (small is installed on mount in shipping) Hex Wrench Registration Card Peak Design M-MM-AA-BK-1: Motorcycle Stem Mount Black One Size