Smooth edge fork mount clamp kit 41mm2 piece aluminum fork mount clamp for an easy install. Comes with 5 16 24 threaded bolt that is installed to the; un threaded body; by a counter locking nut. Most 5 16 24 threaded turn signals or other accessories can be installed after which; due to the two piece design; the clamp can be mounted to the fork tube without fork tube removal. Great for use with turn signals or auxiliary lights.