Drag bits

Singula ex PDC terebro frenum:
1. Size: 55mm, 65mm, 75mm, 94mm, 108mm, 113mm, 127mm, 133mm, 145mm,153mm,175mm,185mm,193mm, 250mm ...
2. Bit type: genus columen concavum, alae tres, alae quattuor, alae quinque, alae sex
3. PDC cutterarum amplitudo : 1303, 1304, 1308, 1603
4. Materiae corporis: Ferro, vulva Carbide Wolframi.
5. Lapis congruus: lapis luto, calcis, shale, sabuleus et lapidis etc.
6. Color: Grey, Aurum, Hyacinthus, vel ut mos postulatus
1.   Ferrum  corporis  terebrarum  maxime adhibetur ad exercendam -medium formationem mollium, qualia est lapis, calcis, shale, sabuleum et silices etc;
2.                                                                                                                             Ponitur ad exercendam foveam, foveam exhauriendam, foraminis carbonis grouting, aquae  conservationis documentum;
3. Ferri corporis terebrare opera sub strationem pressuram, medium humile celeritate pellere, magnum incile.
4. Maximum gerunt resistentiam;
5. Impact duritiem;
6. Maximum artem efficientiam;
7. Longa vita servit.