This is the first and only truly correct mount for "pin top" shocks. They are CNC billet DuPont Delrin and stainless steel and will allow your shocks to have correct damping without the rubber and still allows angular deflection of the shock as it goes through its' motion with virtually zero side load on the shock. Unlike some others, this is spherical on the top and bottom so it works with stock leaf spring and/or coil-over shocks. Tested on Penske, Bilstein, Sachs (OE Corvette), and even "P" brand shocks but will fit any shock with a 10mm upper pin top. Better performance, better shock life, totally quiet for street or track use. It works with all of the different frame thicknesses from 1984 to present, as well as Silverado pickup fronts and similar SUV's with pin top shocks. The price is for a front end kit for trucks.