ROCKBROS Bike Handlebar Extender Double Bike Handlebar Bracket Mount Bicycle Handlebar Extension Lightweight Durable for Holding Bicycle Speedometer GPS Phone Mount Holder

Really nice solid bit of gear

Had hoped they had solved the bar clamp on this from the previous model but they have not. Even with a lightweight computer and light head the clamps slip on the bar and no amount of grip tape fixes it. The only solution I have found is to drill and tap a grub screw into the bar clamps that fit into counter sunk holes made in the handle bar.