This hold up to 55 drill bits, 3 each for 1.0mm to 4.0mm, two each for 4.2mm to 8.0mm and then singles of 8.5mm to 13.0mm. Generally this all works as it should however the 13.0, 12.5, 11.0 and 10.5mm bits in particular are a little snug and need to be pushed down to let the lid close.
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