COMPATIBILITYStand perfectly supports tablets/ipad/phone (4-14 inches), Such as 12.9-inch 10.5-inch iPad Pro, 9.7-inch iPad,iPad mini 1-4, iPad Air, Samsung Galaxy Tab, Amazon Kindle Fire HD, etc.^ADJUSTABLEUse the Allen Wrench under the tablet stand to adjust the degree of tightness. Once you set up a degree of tightness, It would be as sturdy as you want. And the angles are adjustable. Supporting both vertical and horizontal viewing.^STURDY CONSTRUCTION Made of spaceflight Al-Ti alloy and super high strengthened alloy steel material, higher strength, lighter weight.^Please NoteThe clamp is made of plastic, the rest of them are aluminum.^SMART LIFESTYLE Perfect compatible playing game, watching videos, viewing photos, reading, typing, video recording,working ETC.