Single hex / 6 sided sockets. - 10mm / 11mm / 12mm / 13mm / 14mm / 15mm / 16mm / 17mm / 18mm / 19mmm / 20mm / 21mm / 22mm / 23mm / 24mm / 27mm and 30mm. -1/2" drive so will fit any 1/2" drive ratchets / extensions / bars.
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