Combination index, holds 135 pieces Holds 135 drills -29 fractional, 26 letter and 60 wire gauge; 1/16″ to 1/2″ by 64ths, 1 to 60, A to Z letter size Includes the #61-80 wire gauge sizes Each storage hole precisely sized for accurate, quick tool selection Corrosion resistant, epoxy baked on coating Secure, snap-lock steel cover Rugged, heavy gauge all–steel case