High speed steel. Contains broaches: 1/8, 3/16" B-style, 1/4", 3/8" C-style; collared bushings: 1/2", 5/8", 3/4", 7/8" B-style, 1", 1-1/8", 1-1/4", 1-3/8", 1-1/2 C-style; and two shims. Includes storage box."
Warning:This product may expose you to chemicals including Nickel, Chromium, or Lead, chemicals known to the State of California to cause Birth Defects and/or Cancer. For more information go to www.P65Warnings.ca.gov