19-Size Metric Drill Bit Index
A two-tier bench index that holds 19 metric twist drills from 1.0 to 10.0 mm in 0.5 mm steps, each in its own graduated socket so the set stays in size order instead of loose in a drawer. Sockets are bit diameter + 0.5 mm (a 3.0 mm bit gets a 3.5 mm hole) and bottom out 2 mm above the plate; the 13 mm front tier keeps short small bits grabbable while the 22 mm rear tier gives the 6-10 mm bits 20 mm of guide. Overall 112 x 64 x 22 mm, with two 4.5 mm M4 clearance holes in the rear flange to screw it down to a bench or shelf.
organizer drill-bits rack bench