Review on MARQUE Race Mountain Bike Handlebar Grips - Ultimate Grip & Control for MTB and BMX Bicycles with Non-Slip, Knurly Gritty & Half Waffle Patterns by Jordan Epps

My second set of grips. Unfortunately they are wrong. One of the handles kept turning, even tightening the recommended 2Nm torque. I suspect poor quality control at the factory. I tightened them and they still turned and I may have ruined the carbon fiber handlebars. To make sure it wasn't the steering wheel I swapped out the grips and indeed the rotating grip is to blame. Be careful. I was lucky enough to spot this on a test drive around the house. If I had just ridden down the trail on my bike, I would have seriously injured myself. I advise you to look elsewhere for pens.