Suitable for mobile devices with a width of 55–100 mm (for 3.5–7" smartphones) Fits any bicycle, motorcycle, stroller, treadmill, shopping cart, scooter, wheelchair and other round handlebars with a diameter of 22.2–31.8 mm Quick and easy attachment and removal of your smartphone by turning the knob on the side Includes spacers attached to the terminals to protect the device from scratches and bumps Holding device: straight 360° rotatable for the perfect viewing angle Firm hold and no slipping of the smartphone Made of high quality, lightweight aluminum alloy Color: Black/Red Weight: 0.12 kg Height: 8 cm Width: 7.6 cm Length: 11.1 cm