Furuno NavNet Retainer Ring with Trackball Furuno NavNet Retainer Ring with Trackball Furuno 000-171-975 Navnet Retainer Ring with Trackball. SKUFUX171975 MAN#000-171-975 ID#: 3205 Our Price: $109.95 Availability: Usually Ships in 2-3 Days Shipping: FREE Ground Shipping! Condition: Brand New Add to cart We’re sorry for the inconvenience, but please know we are working hard to replenish stock and fill backorders. Global shipping constraints and other material shortages have slowed the supply of products in many industries, including GPS and Marine electronics. We update the Estimated Shipping Date on our website in real time, so feel free to check back frequently. Thank You for your patience and for shopping with The GPS Store, Inc.