With Edson's (#988-23-10) Support Bracket for 2 3/8 in Standard Radar Mast - Surface Mount is designed to give any Edson 2 3/8 in Radar Pole more support, this cast aluminum bracket has a durable white glossy baked on urethane coating and is padded to provide a secure, rattle-free installation. This Surface Mount gives you the ability to support the mast against a bulkhead, cabin side or vertical transom.