The Big Jon Single Planer Pulley is great for building your own custom planer system. The Single Planer Pulley can be mounted to any mast, rail or radar arch that is 7/8 inch to 1 1/2 inches in diameter. This pulley is great for use with any manual or electric planer reel. The Big Jon Single Planer Pulley is constructed from durable, long lasting materials built to withstand heavy use and tough marine environments. This pulley is Big Jon model PM00472. The Big Jon Single Planer Pulley is made in the U.S.A.