Airmar B45 Bronze Thru-Hull w/Depth Temperature - 8-Pin f/Garmin [B45-DT-8G]B45 Bronze Thru Hull with Depth & Temperature 8 Pin for Garmin The B45 is Airmars smallest, bronze, thru hull stem, offering quality design at an economical price. The classic housing is streamlined to deflect aerated water from the transducers face, providing solid echo returns. Features: Bronze housing Depth and Temperature Recommended for planning hull powerboats and cruising sailboats up to 9 m (30) Good sensitivity in a compact housing High