These are the ideal way to set up the bottom link of any 3 or 4 link suspension! We make them .25 thick with a gradually sloped ramp shape to bring them up to the strength of our .375 Chassis tabs and lessen impact, we are pretty sure you can wear them out but you will be very challenged to break them. These are in the popular 2.625" (2 5/8) mounting width for use with our 1.25" heims. Made exclusively of A50 Steel Plate for its density and strength. These are sold in pairs.