Each set consists of 4 pair of hardened and ground parallels. Includes 1 pair of each: (1/2"T x 1"H with 5/16"D), (1/2"T x 1-1/4"H with 3/8"D), (1/2"T x 1-1/2"H with 7/16"D), (1/2"T x 1-3/4"H with 1/2"D) (T=Thick x H=Height with D=Hole Diameter). Includes fitted case.
