This listing is for 2 U-Bolts. High quality OEM grade U-bolts / N-bolts suitable for use on trailers, frames etc... High Tensile suitable for higher load and more critical areas. Not to be confused with cheaper bolts. M12 Thread (12mm diameter). Sizes; 60mm internal width, 165mm total internal length, 90mm long threaded section. Zinc Plated. Supplied complete Nyloc nuts.