M3–M12 Tap And Drill Pair Rack
Three-tier stair rack with seven stations (M3, M4, M5, M6, M8, M10, M12) that keeps each tap standing behind its own tap drill (2.5, 3.3, 4.2, 5.0, 6.8, 8.5, 10.2 mm) and clearance drill (3.4, 4.5, 5.5, 6.6, 9.0, 11.0, 13.5 mm), so you never consult the drill chart again. Footprint 107 x 64 mm, tiers 11/14/17 mm tall; drill holes are drill diameter + 0.6 mm, tap holes are major diameter + 1.5 mm to clear DIN 371 oversize shanks, and a 9 mm label-tape recess runs along the front face.
organizer tap drill-bit machinist