Track Lighting Head, Compatible with Track Style J, Shape Roundback, Lighting Technology Incandescent, Housing Color Black, Maximum Wattage 50 W, Input Voltage 120 V AC, Diameter 2 1/2 in, Overall Length 3 3/4 in, Beam Angle Not Applicable, Aiming Range 90 Degrees , Bulb Base Type GU10, Compatible with Product Type Trac-Lites, Trac-Master Trac, Head Rotation Range 358 Degrees , Housing Material Steel, Includes On-Off Switch, Includes Bulb No, Lighting Certification Unrated, Overall Height 6 in