Zip-Grip Bicycle, Treadmill, Exercise Bike Handlebar Mount Holder for Samsung Galaxy Tab 2, 3, 4, 5 and/Tab A E S2 S3 Tablets (use with or without case protector) Quick release strap allows fast / easy attachment and removal of the mount Adjustable swivel ball head mounting connection for maximum flexibility For bikes, treadmills, ATVs, anything with cylindrical bars posts or frames (15mm to 50mm) Digital`s Zip-Grip is designed to hold your Samsung Galaxy Tab 2 with or without a carrying case Adjustable legs keep buttons and ports free