"With 29 chrome molybdenum alloy steel jumbo impact sockets ranging from 3/4in. to 2 1/2in. in a heavy-duty blow-mold case with wheels, you'll be ready for any job. Material Type Chrome molybdenum, Pieces qty. 29, Point 6, Measurement Type Standard SAE, Storage Type Plastic case, SAE Socket Size in. 3/4-2 1/2, Drive in. 3/4, Specialized Pieces qty. 0."