| OPTREL 5003.500 Potentiometer Kit,For OPTREL Helmets Potentiometer Kit, Color Black/Clear, Compatible with Brand Optrel, Compatible with Manufacturer Model Number 1006.210, 1006.300, 1006.500, 1006.501, 1006.502, 1006.600, 1006.900, 1006.901, Compatible with Series Sphere Series Helmet, Features Sphere... ... more OPTREL 5003.500 Potentiometer Kit,For OPTREL Helmets Potentiometer Kit, Color Black/Clear, Compatible with Brand Optrel, Compatible with Manufacturer Model Number 1006.210, 1006.300, 1006.500, 1006.501, 1006.502, 1006.600, 1006.900, 1006.901, Compatible with Series Sphere Series Helmet, Features Sphere... | | $16.79 go to store |