New 1969-77 mid and full size GM style caliper. 7/16"-20 inlet so you can use the readily available brake hoses and hardware from Pre-1978 GM midsize cars. IMCA approved. Fits 1" thick rotor. 2.8" diameter pistons installed. It has 7-1/16" center to center mounting holes. The width between mounting tabs is 2-3/4". Item Details 7/16"-20 Inlet Application This caliper is a standard full size GM caliper used for years on many vehicles (1969-72 Chevelle, 73-77 A-Body, 1969-1981 Camaro, 1977 Caprice, S-10 pickups, etc). It will fit any bracket / spindle designed for the large GM calipers (7” mount width). Depending on the spindle and rotor size it will not fit in most 14” wheels (nor in 15” drum brake wheels). Some parts are not legal for use in California or other states with similar laws/regulations