Highly durable and scratch and chip-resistant, the Russell Marine Products tempered glass will be able to survive drops, bumps, scratches, and normal wear and tear. The sturdy 9H (hardness level) takes your Lowrance fish finder screen protectors to the next level of indestructibility. Designed to be strong and durable, our Lowrance fish finder screen guards provide all the necessary protection without any bulk. The ultra-light .30mm allows for a delicate touch that will provide an impenetrable shell in addition to not interfering with the sensitivity of your touchscreen. The Lowrance GPS screen guard is the latest in state-of-the-art marine screen protection technology.