Feature(may vary by option.)

●This is an anti-theft lock screw--Security Knob and Key Knob Kit special for motorbike/ bicycle phone mount with double socket arms.
●It specially fits for ram phone mounts with long stem bases.
●Safety Function: it avoids your motorcycle/bike phone mount to be stolen outside.
●Easy Installation: just need to unscrew the original lock on the stem phone mount, and install it on. Just put the key away while leaving your bicycle phone mount outside.

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Description

iMESTOU Anti-Theft Lock Security Knob and Key Knob Fit for RAM Double Socket Mounts or Other Motorcycle/Bike 1" Ball Stem Phone Holder