This zinc pencil and plug set from Camp Zinc is a must-have for any outboard engine owner. The 3/4" size is perfect for use with a variety of engines, and the durable construction ensures that it will last for many seasons to come. Whether you're a professional mechanic or a DIY enthusiast, this set is easy to install and will provide reliable performance. The brand name Camp Zinc is synonymous with quality and this product is no exception. Don't miss out on this essential component for your boat's engine.