This part of ISO 10097 specifies the nomenclature and the leading dimensions necessary for the interchangeability of the following wireline drilling equipment for drilling holes of diameter 1,890 in to 3,790 in, yielding cores of diameter 1,063 in to 2,500 in. The equipment is illustrated in Figure 1 and comprises the following: a) core bit; b) reaming shell; c) core lifter; d) core lifter case; e) outer tube; f) inner tube; g) drill rod (smooth pipe only).