1/2" shank Silver & Demming set allows large bits to be used with 1/2" chuckSizes: 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1". Length on all bits is 6"Heat treated High Speed SteelIncludes hinged wood storage case with steel latchesSame set sold as "Brand name" for over $120 !8 piece...