MARPAC 7-0378 BATTERY SWITCH PERKO #8501 Spark Tester the finer the filtration

the finer the filtration

Gauge Size: 22-18

but do meet the USCG 33 CFR/ABYC A-16 from 1997

Thread Diameter 10mm

protecting against UV rays and oxidation

MARPAC 7-0378 BATTERY SWITCH PERKO #8501 Spark Tester the finer the filtrationMARPAC 7 0378 BATTERY SWITCH PERKO #8501 Medium Duty Battery Selector Switch 250A Continuous Features: For use with 6 to 32 Volt Marine Electrical Systems Capacity 250 AMPS Continuous, 360 AMPS Intermittent When used with Non Unitized Alternators, these models will interrupt the field current (reducing the possibility of damage) if turned "OFF" with the engine running Specs: Diameter: 5 1 4" Depth: 2 5 8"