TITANIUM COATING - This coating helps reduce friction and extends the life of the bits 135 DEGREE SPLIT POINT TIPS - These tips help prevent walking with drilling on contact MULTIPLE APPLICATIONS - Ideal for usage with wood, metal, and hard plastic 1/4 INCH SHANKS INCLUDES - 4x 1/16, 1x 5/64, 2x 3/32, 1x 7/54, 4x 1/8, 1x 9/64, 1x 5/32, 1x 11/64, 2x 3/16, 1x 13/64, 1x 7/32, 1x 1/4, 1x 5/16, 1x 3/8 (inches), storage case