Chrome plated, threaded studs are hollow to route wires. Offsets turn signal by 1 7/8" (48mm), has one 3/8-16x1" UNF and one 5/16-24x7/16" UNF threaded stud. Stock replacement to mount rear turn signals on 1987-1991 FXLR Low Rider, FXR Super Glide, FXRS Low Glide & Low Rider and FXRS-SP Sport edition. Can also be used on models with similar turn signals. Sold each.