OTC (1253 Cylinder Sleeve Installation Plate Plate covers a range of bore sizes Reversible design makes both sides usable Plate works with the manual or 17-1/2 ton hydraulic puller/installers numbers 1200 1202 and 1203 Fits sleeves from 3-9/16 inches to 3-7/8 inches A = 4-1/4 inches B = 3.546 inches C = 3.859 inches