The Attwood Bow Stop V-block 11200-1 is made from natural rubber to capture the bow of your boat at the stop pylon yet cushion it from jostling on the road. It has a pre-drilled hole for easy and correct mounting. The all black 2" x 2" block has narrow "V" pads for deep-v hull boats or pontoon logs to rest into. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing the highest quality marine products for over 100 years. We deliver safe and reliable lighting, fuel systems, water systems, seating & pedestals, swim ladders, custom upholstery, and general marine accessories that are easy to install and meet regulatory compliance