Titanium bits last up to 5 times longer. Set includes: Convenient storage case, (2) 1/16", (1) 5/64", (2) 3/32", (1) 7/64", (2) 1/8", (1) 9/64", (1) 5/32", (1) 11/64" bits and (2) 3/16", (1) 13/64", (1) 7/32", (1) 15/64", (1) 1/4", (1) 9/32", (1) 5/16", (1) 11/32", (1) 3/8" 3-flat shank bits.