C-MAP MAX NA-M028 - Alaska - SD Card [NA-M028SDCARD] Ronstan Orbit Series 30 Ball Bearing Blocks Lewmar's Synchro blocks are engineered

Lewmar's Synchro blocks are engineered for speed

Sheave diameter: 1 49/64" (45mm)

Slip on inlet ducting connection

Mounting: Panel Mount

USCG Approved

C-MAP MAX NA-M028 - Alaska - SD Card [NA-M028SDCARD] Ronstan Orbit Series 30 Ball Bearing Blocks Lewmar's Synchro blocks are engineeredNA M028 => Alaska Coverage of the southern Alaska coast from Dixon Entrance up and over to Kodiak Island. Includes all of the Aleutian Islands out to Attu Island, Bristol Bay, and the North Slope over to Liverpool Bay in the Yukon Territory, Canada. Additional coverage of the MacKenzie River down to the 1160 km distance marker. This product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues