Single hex / 6 sided sockets. Sizes: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm and 24mm. 3/8" square drive so will fit any 3/8" drive ratchet/bar etc.
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