The HBE performs well photometrically in most applications where medium to high illumination levels are required The maximized surface area results in superior cooling and further extends the life of ballast components, 3 ft cab tire is supplied Mogul base, pulse-rated socket with a nickel-plated screwshell and spring loaded center contact Multi-tap ballasts are factory pre-wired to highest voltage, unless other wiring specified The anodize aluminum reflector helps to maintain a uniform, reflective finish