Security Knob and Key Compatible with 4-inch to 7-inch

Compatible with 4-inch to 7-inch smartphones

this is adds more reach to your favorite mounting solution

·        For M6 handlebar bolts

·        Compatible with most smartphones the sizes of 4 inches to 7 inches

Security Knob and Key Compatible with 4-inch to 7-inchProduct Description: Keep your devices and mounting system safe from theft and tampering with the security knob Replaces standard knobs on 1" B size double socket arms You can easily adjust the angle with the rotary key, wide compatibility, easy and simple to install and use. Made of high quality ABS plastic material, anti shock and stable, durable and safe to use Package Includes: 1 X Security Knob 1 X Security Key