Heavy-Duty Universal Cupholder Mount with 4-Way Hold, Claw Smartphone Grip, Extension Arm up to 13" Boom Mount with claw grip provides a no vibration adjustable boom arm. the boom arm expands to 13" reach. it also includes one of the strongest 4 way lock in phone grip in today's market. the grip is expandable to fit all size phones with protective cases. tested to fit the following phones with cases: IPHONE XS MAX with Otter box defender SAMSUNG GALAXY S9+ with otter box defender SAMSUNG GALAXY 10+ with otter box defender SAMSUNG NOTE 9 with Pelican Voyager case Boom Expands to 13" reach Adjustable arm 360 degree rotating holder Expandable to fit all car cup holders Lock in 4 way phone grip Expandable to fit all size phones with protective cases Quick release button for easy phone removal Specifications WEIGHT: 2.80lbs DIMENSIONS: 4"W x 11.5"H x 4.25"D