These slim and sleek fork tube clamps give you the ability to attach your turn signals to your fork tubes without interfering with other fork tube accessories thanks to their narrow profile. All mounting hardware is included for an easy installation.; Black finish Fits 39mm forks Use to mount Joker Machine Rat Eye, Astro and Vega turn signals to fork tubes CNC-machined from 6061 billet aluminum Special alloy gold zinc clamp bolts Narrow profile reduces interference with other fork tube accessories Include mounting hardware