Standard SSM-21A Speaker MicrophoneModel: SSM-21AThe SSM-21A is a high performance Submersible speaker microphone desiged especially for their hand held transceivers

This is the coupling between motor and tailpiece used on the BOW2512 bowthruster

Includes an AGC-30 fuse: 1/4" x 1-1/4" with a 7" wire

Three cylinders

SRLP100 Retractable Thruster Unit 90Deg Motor 12v Reverso Standard SSM-21A Speaker MicrophoneModel: SSM-21ATheSleipner#39; s (Side Power)range of proportional speed control DC thrusters allow you to select the power you need for precise boat movements in any weather and sea conditions. The unique quot; holdquot; feature allows you to keep the boat in position at dock or in locks. Other items to consider when purchasing a new thruster: Bow TunnelorStern Tunnel Control Panels andAccessories Radio Remote Controls (on off only) AutoMainswitch or manual Battery