You are looking at the crank and water pump pulleys from a 1980 Pontiac Turbo Trans Am with A/C & P/S. The inner crank pulley is 10001528 and is 8 1/8 inch in dia. The outer crank pulley is 481038YB and is 8 inches in dia and 2 inches deep. The water pump pulley is 10010098 and is 6 1/2 inches in dia and 1 1/4 inches deep. I?ve included the crank ring and bolts. These pulleys will fit 79 to 81 Pontiac Buick and Olds models with Pontiac built 301 or 265 V8 engine with A/C & P/S including Turbo or non-Turbo Trans Am. No pitting. Nice and straight. Will clean up nicely.