30-Piece Metric 3/8th  Magnetic Socket Holder

The diameter of the cut-out holes for the stockets measure:

6,7,8,9,10,11,12 = 0.783" (19.89mm)

13,14 = 0.89" (22.81mm)

15,16 = 0.977" (24.83mm)

17 = 1.056" (26.83mm)

18, 19 = 1.137" (28.89mm)

20 = 1.219" (30.77mm)

Please note that all of these measurements are rough and Vetco can NOT provide exact measurements.