The EZ Tear provides a shield for the folded tearoffs to keep you from grabbing them by accident. It protects the folded tabs and guides your hand to the top tearoff so you can get the full benefit of every single tearoff and ultimately keep your vision clear so you can focus on the racing and not fumbling with tearoffs. The EZ Tear is universal and attaches between the lens and the tearoff post and adjusts to accommodate the tearoff tabs on all brands of helmets and tearoffs. * *We strongly recommend the use of aluminum tear-off posts to ensure a tight fit. If you do use plastic posts, we provide a longer screw although a larger screw may still be needed in some cases** For installation tips and troubleshooting, click HERE .