Combination index, holds 134 pieces Holds 134 drills-29 fractional, #80 wire gauge and 25 metric; 1/16″ to 1/2″ by 64ths #1 to #80 wire gauge, 1mm to 13mm by 0.5mm 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