Silo X20 series track and rail heads are the perfect replacements for halogen MR16''s as they offer lower wattage with superior lumen output, over 10 times the rated life span, less maintenance, no projected heat, and BeamShift technology. All Silo X20 series track luminaires are equipped with BeamShift technology, allowing continuous in-field modification of beam angle from spot to flood. For use with 120V track. Track Fixture is available in H, J/J2, and L track configurations. Order according to track layout specifications.