Features: Made of premium plastic material,durable and practical. 11.8in flexible long arm for phone mount to move freely. Silicone pads for two claw sides provide good grip and better protection. 360 degree rotating design allows you to adjust your phone to any angle and position of your preference. Compatible with any devices width: 50-100mm/2.0-3.9in,like phone,fishing finder,sport camera etc. Designed to install on kayak with fixed screws,stable base and fastener buckle. Different installtion with different screw threads,provides you different demands. Specification: Model: M2030-07 / M2030-08 (optional) Material: Plastic,metal Adjustable width: 50-100mm/2.0-3.9in Package weight: Approx. 164.3-244.3g/5.7-8.6oz Package List: 1* Phone Holder 1* Base 2* Screws NOTE:Thisistheguiderailinstallationeffect.Guiderailanditsinstallationhardwarearenotincluded,pleasebringyourowntoinstall.