Review on Bike Fork Stem Extender - MTB Handlebar Riser Extension, Aluminum Alloy Head Up Adapter for Mountain Bike, Road Bike, MTB, BMX - Extended Edition (Brand New, Silver) by Ben Walls

Other reviews showed that the screws did not fully penetrate the opposite side of the extension. I haven't encountered this problem. The manufacturer may have changed the size of the screws because mine fit perfectly. This product was easy to install and solved the problem of too much pressure on the wrists. You ride in a more upright position, which reduces stress on your wrists and back. After installation, there was no slipping of the device. Good product.