You are looking at a set of 1969 to 74 Chevy small block pulleys for the long water pump and manual steering from a 74 Camaro. They are not deep groove. These pulleys are correct for 69 & 74 307, 327 & 350 up to 300 HP motors in Chevelle Camaro Nova Monte Carlo and Impala with manual steering. The crank pulley is 3956666 and is 6 13/16 in diameter and 2 5/8 in depth. The water pump pulley is part # 330556 and is 7 3/16” dia and 1 ¾” deep. These are original GM, not a reproduction. No pitting or bends.